tag:blogger.com,1999:blog-27549152728613738232024-03-13T06:47:48.743-07:00The ZOMDir projectZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comBlogger12125tag:blogger.com,1999:blog-2754915272861373823.post-29226278023226488692021-04-01T10:22:00.002-07:002021-04-01T23:32:08.833-07:00ZOMDir's Page inspector to the rescue<p><span style="font-family: verdana;"><span>Recently I launched <a href="https://pageinspector.zomdir.com/">ZOMDir's Page inspector</a>. This tool gives insight in the structure and the 'hidden' content of any web page.</span></span></p><p><span style="font-family: verdana;"><span>When I tested it on the many subdomains of ZOMDir, I discovered that there was room for improvement in the <a href="https://json-ld.org/">JSON-LD</a> code used.</span></span></p><p><span style="font-family: verdana;"><span>It was a small change in de code, hence I updated, by hand, the JSON-LD code and without any checks I published the code. </span></span></p><p><span style="font-family: verdana;"><span>Oops ... a few days later Google mailed me ...</span></span></p><p style="padding-bottom: 10px; padding: 0px 5%;"><span style="font-family: verdana;"><i><span style="color: black; font-size: 21px; font-weight: normal; line-height: 25px;">Unparsable structured data issues detected on <a href="https://rustyresults.zomdir.com/" style="color: inherit;">https://rustyresults.zomdir.<wbr></wbr>com/</a></span></i></span></p><span style="font-family: verdana;"><i>
</i></span><div style="color: #202124; padding: 0px 5%;"><p><span style="font-family: verdana;"><i> To the owner of <a style="color: inherit;">https://rustyresults.zomdir.<wbr></wbr>com/</a>:
</i></span></p><span style="font-family: verdana;"><i>
</i></span><p><span style="font-family: verdana;"><i>Search Console has identified that your site is affected by 1 Unparsable structured data issues:
</i></span></p><span style="font-family: verdana;"><i>
</i></span><p><span style="font-family: verdana;"><i><span style="font-weight: bold;">Top Errors</span></i></span></p><span style="font-family: verdana;"><i>
</i></span><p><span style="font-family: verdana;"><i>Errors can prevent your page or feature from appearing in Search results. The following errors were found on your site:</i></span></p><span style="font-family: verdana;"><i>
</i></span><div style="color: #202124; padding: 0px 5%;"><p dir="ltr" style="margin: 0px 0px 10px;">
<span style="font-family: verdana;"><i><span style="color: #5f6368; text-decoration: none; word-break: break-all;"><a style="color: inherit;">Parsing error: Missing ',' or '}'</a></span></i></span>
</p>
</div><span style="font-family: verdana;"><i>
</i></span><p><span style="font-family: verdana;"><i>We recommend that you fix these issues when possible to enable the best experience and coverage in Google Search.</i></span></p>
</div><p><span style="font-family: verdana;"><span>So
I checked the code with ZOMDir's Page inspector and indeed there was an
error. However the error given was much more detailed. </span></span></p><p><span style="font-family: verdana;"><span><span>ZOMDir's Page inspector stated that there was an </span></span></span></p><p style="margin-left: 40px; text-align: left;"><span style="font-family: verdana;"><span style="color: #666666;"><span><span>Unexpected token / in JSON at position 554 </span></span></span></span></p><p><span style="font-family: verdana;"><span><span>and showed the JSON code. </span></span></span></p><p><span style="font-family: verdana;"><span><span>Handy. In a few seconds the bug was fixed and checked :-) </span> </span></span></p><p><span style="font-family: verdana;"><span><br /><br /></span></span></p><p><span style="font-family: verdana;"><span> </span></span></p>ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-52656134789150569722021-01-13T10:36:00.001-08:002021-01-13T10:36:21.927-08:00CSS Secrets<p>Some CSS code is so amazingly useful, I wonder why not every site uses it.</p><p>For example <b>word-wrap:break-word;</b> is useful to prevent horizontal scrollbars.<br /></p>ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-34986785075240411532021-01-11T10:34:00.008-08:002021-03-29T03:53:30.730-07:00How important is the technical quality of a website? <p>January 11, 2021 I started a project to test the importance of the technical quality of a website. With <a href="https://mobile-seo.zomdir.com/">Mobile SEO factors that matters</a> I have created a technical almost perfect website regarding mobile SEO.</p><p>This website doesn't rank in Google at this moment because it is brand new.</p><p>In this blog, I track the position of 'Mobile SEO factors that matters' in Google search results over time when you search for 'Mobile SEO'.<br /><br />So I'd say ... Stay tuned.</p><p>2021 March 29. Updated the web page. The fieldset / legend structure used before is replaced by a classical header / paragraph structure. <br /></p><p>2021 March 29. "Mobile SEO factors that matters" is not found at the first ten pages of Google. <br /></p><p>2021 March 17. Google mails me "Google systems confirm that on Mar 15, 2021 we started collecting Google
Search impressions for your website in Search Console. This means that
pages from your website are now appearing in Google search results for
some queries." <br /></p><p>2021 January 26. I got a redirect error from this blog for "Mobile SEO factors that matters". It's to soon to get results and indeed. The site is not found.<br /></p><p>2021 January 13. "Mobile SEO factors that matters" is not in Google's index, so I requested indexing. The url is now in the priority crawl queue.<br /></p><p><br /></p>ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-91396103918073898922021-01-11T00:17:00.002-08:002021-01-11T00:17:29.300-08:00BLaaG for Blogger<p>Recently I finally had time to update and maintain <a href="https://www.zomdir.com">ZOMDir.com</a> and all related subdomains. </p><p>That included find and correct broken and redirected links at this blog. </p><p>However I learned that it is hard to find the broken links at a <a href="https://www.blogger.com">Blogger</a> blog. There are to much false positives. Hence I decided to create a variant of the broken link checker <a href="https://brokenlinks.zomdir.com">Broken Links at a Glance</a> optimalized for blogger blogs. </p><p>The result is <a href="https://blaagforblogger.zomdir.com">BLaaG for Blogger</a>.</p><p>Please let me know what you think of this broken link checker.</p><p>Thanks, and best regards,<br />Hans<br /></p>ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-53608669075254754242018-07-30T07:52:00.001-07:002021-01-05T11:33:22.665-08:00Linking out isn't about risk. It's about uncertainty.<span style="font-size: large;"><span face=""verdana" , sans-serif">Recently I wrote that you should <a href="https://blog.zomdir.com/2018/07/why-you-should-check-redirected-links.html">check redirected links</a>.</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif">In <a href="https://en.wikipedia.org/wiki/The_Ambler_Warning">The Ambler Warning</a> from <a href="https://en.wikipedia.org/wiki/Robert_Ludlum">Robert Ludlum</a> it is explained exactly why this is important.</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif">From <a href="https://blog.zomdir.com/2018/07/why-you-should-check-redirected-links.html">the previous blog</a>, you might get the idea that it is an acceptable risk that one percent of the removed links, link out to hacked sites.</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif">However Caston -my favorite character in The Ambler Warning- explains the difference between <a href="https://en.wikipedia.org/wiki/Risk">risk</a> and <a href="https://en.wikipedia.org/wiki/Uncertainty">uncertainty</a>. Let me quote Caston.</span></span><br />
<blockquote class="tr_bq">
<i><span style="font-size: large;"><span face=""verdana" , sans-serif">'This isn't about risk. That's what people like you never understand. It's about uncertainty. You think you can assign a probability metric to future events like this. For technical reasons we do that all the time. But it's bullshit - nothing more than a convention, an accounting conceit. Risk suggests measurable probability. Uncertainty is when likelihood of future events is simple incalculable. Uncertainty is when you don't even know what you don't know. Uncertainty is humility in the presence of ignorance.'</span></span></i></blockquote>
<span style="font-size: large;"><span face=""verdana" , sans-serif"></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Because I don't know how sites get hacked, how it will be done in the future -Will the hackers use <a href="https://en.wikipedia.org/wiki/Artificial_intelligence">artificial intelligence</a>?-, -Are hacking instructions for sale?- I realise that the percentage of 1% in the previous link is indeed bullshit. </span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif">However the advice to check redirected links is still valid, although it was based on risk. I think the advice should be based on uncertainty. </span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Again, good luck with <a href="https://rustyresults.zomdir.com/">checking</a> and <a href="https://blog.zomdir.com/2017/09/how-to-fix-broken-links.html">repairing</a> your broken and redirected links.</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif">Hans</span></span><br />
<br />
<b><span style="font-size: large;"><span face=""verdana" , sans-serif">--<br /><a href="https://www.zomdir.com/">ZOMDir.com</a> is a dynamic directory and a wiki<br />Everyone is able to add a link in 10 seconds<br />To learn more view this <a href="https://www.slideshare.net/ZOMDir/zomdir-tour">Slideshare presentation</a></span></span></b>ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-31839481312892516752018-07-23T06:44:00.003-07:002021-01-05T11:42:36.888-08:00Why you should check redirected links (and 5 facts regarding broken links)<span style="font-size: large;"><span face=""verdana" , sans-serif"></span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif">Everyone will understand that broken external links will lower the user experience.</span></span><br />
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Not everyone will know that the percentage of broken links at your website is an indication for search engines how often you check for broken links. </span></span><br />
<br />
<br />
<h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">A lot of broken links? Poor maintenance! </span></span></h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">The halftime of an external link is two year. Hence <a href="https://maintenancefrequency.zomdir.com/">the number of broken links</a> indicates what was the last time you checked and repaired broken links.</span></span><br />
<br />
<span style="font-size: large;"><span face=""verdana" , sans-serif">Repairing broken links at a regular base is the difference between a neglected site and a smooth website.</span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span></div>
<div>
<h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Redirected links are dangerous </span></span></h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Almost everyone thinks that <a href="https://en.wikipedia.org/wiki/URL_redirection">redirected links</a> won't do any serious harm. Believe me that is a huge mistake. Redirected links are dangerous.</span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Recently I analyzed the reason why links are automatically removed from <a href="https://www.zomdir.com/">ZOMDir.com</a> (you will find the numbers below).</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif">One of the main findings is that <b>o</b><span face=""helvetica neue light" , , "helvetica" , "arial" , sans-serif"><b>ne percent of the removed links, link out to hacked sites</b>. </span></span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><span face=""helvetica neue light" , , "helvetica" , "arial" , sans-serif"><br /></span></span></span></div>
<div>
<h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><span face=""helvetica neue light" , , "helvetica" , "arial" , sans-serif">How to find links to hacked sites? </span></span></span></h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><span face=""helvetica neue light" , , "helvetica" , "arial" , sans-serif">Almost the only way to discover links to hacked sites, is by following the redirected link. When you see an online shoe store where you expected information of a fitness center, you know the site is hacked. </span></span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Of course there are a lot of redirected links. A lot of websites <a href="https://www.searchenginewatch.com/2017/08/15/switching-to-https-is-it-really-worth-it/">switch from http to https</a> these days. Make live easier for yourself and link to the redirected site instead of the original site. Otherwise you have to check every redirected site again and again when you check and repair broken links.</span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif"></span></span></div>
<div>
<h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Other findings </span></span></h3>
</div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif">1. <b>Half of the broken and redirected links could be fixed</b>. That is the target website is still working fine, although the website has been rebuild. Depending on the quality of the rebuilding team you are redirected, get a neat <a href="https://en.wikipedia.org/wiki/HTTP_404">404 error</a> or a brute server error;<span face=""helvetica neue light" , , "helvetica" , "arial" , sans-serif"> </span></span></span><br />
<br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><span face=""helvetica neue light" , , "helvetica" , "arial" , sans-serif">2. <b>Ten percent of the broken links are due to programming errors</b>. This vary from very slow loading webpages, to pages without any content, to incorrect database connections. So always check your entire site with <a href="https://rustyresults.zomdir.com/">a broken link checker</a> when someone has changed something at your site;</span></span></span><br />
<br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><span face=""helvetica neue light" , , "helvetica" , "arial" , sans-serif">3. Another <b>ten percent of broken links are due to the classic 404 page not found error</b>. Most of the time these error indicates that the website was rebuild, and the rebuilding team didn't redirect the old webpage;</span> </span></span><br />
<br />
<span style="font-size: large;"><span face=""verdana" , sans-serif">4. When a site owner gives up a domain name, around <b>25% of these old domains are parked by a <a href="https://en.wikipedia.org/wiki/Domain_parking">domain broker</a></b>;</span></span><br />
<br />
<span style="font-size: large;"><span face=""verdana" , sans-serif">5. <b>30% of the removed links are removed due to redirections</b>. Nearly all redirected webpages redirect to <a href="https://en.wikipedia.org/wiki/HTTPS">a secure site</a>.</span></span></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span></div>
<div>
<h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Raw research results</span></span></h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Here are the raw results of my research.</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<br />
<h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Error codes broken links</span></span></h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">ZOMDir has an inbuild linkchecker (similar to "<a href="https://brokenlinks.zomdir.com/">Broken Links at a Glance</a>") and ZOMDir keeps track when and why a link is removed. </span></span><br />
<br />
<span style="font-size: large;"><span face=""verdana" , sans-serif">I analyzed the last 5000 <a href="https://www.zomdir.com/removedlinks.htm?language=en">removed links</a>. These links where removed from July 30, 2016 till July 16, 2018. </span></span><br />
<br />
<span style="font-size: large;"><span face=""verdana" , sans-serif">On average every day 7 links are removed at ZOMDir.com. </span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<br />
<h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Manual removed links</span></span></h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">These links are removed by hand. Probably because these links were added to an inappropriate category.</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Manual 408 8%</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<br />
<h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Server side errors </span></span></h4>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#500">500</a> 2361 47%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#503">503</a> 169 3%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"></span><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#502">502</a> 10 0%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#504">504</a> 1 0%</span></span><span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<br />
<h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Redirections </span></span></h4>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#301">301</a> 1027 21%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#302">302</a> 374 7%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#303">303</a> 25 1%</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<br />
<h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Client side errors </span></span></h4>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#404">404</a> 479 10%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#400">400</a> 30 1%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#401">401</a> 30 1%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#402">402</a> 20 0%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#403">403</a> 18 0%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#410">410</a> 16 0%</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<br />
<h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Security errors</span></span></h4>
<span style="font-size: large;"><span face=""verdana" , sans-serif">When ZOMDir checks broken links, there is also a check if the page linked to is still safe to visit. When that's not the case you will get a 604 error.</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Error <a href="https://about.zomdir.com/status-codes.htm#604">604</a> 32 1%</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<br />
<h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Manual checked links</span></span></h3>
<span style="font-size: large;"><span face=""verdana" , sans-serif">By hand the latest 564 removed links where checked. The formal error codes aren't that relevant now. I want to know indepth why a link was removed. Here are the findings:</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Server not found 149 26%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"></span><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Temporary error 110 20%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Redirected 101 18%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Page not found 76 13%</span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Domainparking 45 8%</span></span><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;"> </span></span></div>
<div>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Programming error 32 6%</span></span><span style="font-family: "courier new" , "courier" , monospace;"></span><span style="font-family: "courier new" , "courier" , monospace;"></span><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;"><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;"> </span></span></span></span></div>
<div>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;"><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Slow website (no response) 19 3%</span></span></span></span><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;"> </span></span></div>
<div>
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Stop of freehosting 15 3%</span></span></div>
<div>
<span style="font-family: "courier new" , "courier" , monospace;"></span><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Site in maintenance mode 10 2%</span></span><span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;"> </span></span><br />
<span style="font-family: "courier new" , "courier" , monospace;"><span style="font-size: large;">Hacked 7 1%</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Thanks, for your attention, happy linking and please <a href="https://rustyresults.zomdir.com/">check</a> and <a href="https://blog.zomdir.com/2017/09/how-to-fix-broken-links.html">repair</a> your links at a regular base.</span></span><br />
<span style="font-size: large;"><span face=""verdana" , sans-serif">Hans</span></span><br />
<b><span style="font-size: large;"><span face=""verdana" , sans-serif"><br />--<br /><a href="https://www.zomdir.com/">ZOMDir.com</a> is a dynamic directory and a wiki<br />Everyone is able to add a link in 10 seconds<br />To learn more view this <a href="https://www.slideshare.net/ZOMDir/zomdir-tour">Slideshare presentation</a></span></span></b></div>
<div>
<span style="font-size: large;"><span face=""verdana" , sans-serif"><br /></span></span></div>
ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-25882325391115006162017-11-22T10:37:00.000-08:002019-10-28T06:10:28.795-07:00How often should I check for broken links?<span style="font-family: "verdana" , sans-serif; font-size: large;">How often you should check broken links depends on the percentage of broken links which is acceptable for you. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">The lower the percentage broken links you allow, the more frequent you should check and repair broken links.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">With the tool <a href="https://maintenancefrequency.zomdir.com/">Maintenance Frequency at a Glance</a> you are able to find out how often you should check for broken links.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">This tool is based on <a href="https://blog.zomdir.com/2017/10/the-half-life-of-link-is-two-year.html">research</a> regarding the half time of broken links in a copy of the former <a href="https://en.wikipedia.org/wiki/Yahoo!_Directory">Yahoo! directory</a>.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Some findings are:</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"></span><br />
<ul><span style="font-family: "verdana" , sans-serif; font-size: large;">
<li>When 3% broken links is acceptable, you should check your site every 1 month.</li>
<li>When you check your site every 3 months, you might expect 8% broken links.</li>
<li>When you check your site every 6 months, you might expect 16% broken links.</li>
<li>When you check your site every year, you might expect 29% broken links.</li>
<li>When you check your site every 2 year, you might expect 50% broken links.</li>
</span></ul>
<span style="font-family: "verdana" , sans-serif; font-size: large;">
</span>
<div>
<span style="font-family: "verdana" , sans-serif; font-size: large;">I think that you should check for broken links at least every 3 months although I often advice to check your site every month for broken links.</span></div>
<div>
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div>
<span style="font-family: "verdana" , sans-serif; font-size: large;">For relative small sites I advice <a href="https://brokenlinks.zomdir.com/">Broken Links at a Glance</a>. For larger sites I advice <a href="http://home.snafu.de/tilman/xenulink.html">Xenu's Link Sleuth</a>.</span></div>
<div>
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Happy broken link hunting,</span></div>
<div>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Hans</span></div>
<div>
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span><b style="font-family: verdana, sans-serif; font-size: x-large;">--<br /><a href="https://www.zomdir.com/">ZOMDir.com</a> is a dynamic directory and a wiki<br />Everyone is able to add a link in 10 seconds<br />To learn more view this <a href="https://www.slideshare.net/ZOMDir/zomdir-tour">Slideshare presentation</a></b></div>
ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-6351873217487256732017-10-12T12:26:00.000-07:002019-10-28T06:09:27.874-07:00The half-life of a link is two year<span style="font-family: "verdana" , sans-serif; font-size: large;">The half-life of a link is two year. Better said, the half-life of an external link is two year. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">That is, when you create today a website with 100 working external links and checks your website after two year with a broken link checker, you will discover that rougly 50 links are broken.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<br />
<h3>
<span style="font-family: "verdana" , sans-serif; font-size: large;">How do you know?</span></h3>
<span style="font-family: "verdana" , sans-serif; font-size: large;">I can almost hear you thinking "How do you know?". Well I will explain below.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">In the past I have copied as much data as possible of the directory Yahoo! This is because Yahoo! stopped, I have created a <a href="https://www.zomdir.com/">directory</a> myself and I wanted to analyse the links and structure of this famous directory.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">At January 4, 2016 I analysed the data I have and concluded that 77% (or more exactly 76.8387682%) of the links are fine.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Recently (October, 9 2017) I analysed the data again. Now 42% (42.0219319%) of the links are fine.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Based on this data I concluded that on an average day 0,093670021% of external links will get broken. That does not seem much. However the <a href="https://en.wikipedia.org/wiki/Link_rot">linkrot</a> percentage per month is 2.81%. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<br />
<h3>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Consequences</span></h3>
<span style="font-family: "verdana" , sans-serif; font-size: large;">After a half year one sixth of the links are broken.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;">After a year 30% of the links are broken.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><b>After two years 50% of the links are broken.</b> Hence the half-life of a link is two year.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">See also this graph below</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh93EfddEakHWQKo2uGocVoLN_qF_HxGq5Ga9PYN_Hp676mnUfHZ1Fhyphenhyphen1UR-LZMXvy3_5zI7XKQlKlK4wIKEVGfGztd0wYTcyAvO-AiH4-xUzxOWMIQcNYFqAGWqsrzVWvh7AITuwYL57fM/s1600/half-life-of-links.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><span style="font-family: "verdana" , sans-serif; font-size: large;"><img border="0" data-original-height="318" data-original-width="544" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh93EfddEakHWQKo2uGocVoLN_qF_HxGq5Ga9PYN_Hp676mnUfHZ1Fhyphenhyphen1UR-LZMXvy3_5zI7XKQlKlK4wIKEVGfGztd0wYTcyAvO-AiH4-xUzxOWMIQcNYFqAGWqsrzVWvh7AITuwYL57fM/s1600/half-life-of-links.jpg" /></span></a></div>
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">So when you think 3% broken links is acceptable, then you should <a href="https://brokenlinks.zomdir.com/">check for broken links</a> every month.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">When 5% is acceptable, check every two months and when you think 10% is acceptable, check every 4 months for broken links.</span><br />
<br />
<span style="font-family: "verdana" , sans-serif; font-size: large;">Tip: Use the tool </span><span style="font-family: "verdana" , sans-serif; font-size: large;"><span style="font-family: "verdana" , sans-serif; font-size: large;"><a href="https://maintenancefrequency.zomdir.com/">Maintenance Frequency at a Glance</a> to find your optimal maintenance frequency. </span> </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Be wise, and check and <a href="https://blog.zomdir.com/2017/09/how-to-fix-broken-links.html">repair your links</a> at a regular base,</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;">Hans</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Update: After writing this blogpost I discovered that in the document "<a href="http://www.informationr.net/ir/9-2/paper174.html">A longitudinal study of Web pages continued: a consideration of document persistence</a>" it is stated that the half-time of a random web page is about 2.0 years. Great that's exactly what I concluded. </span><br />
<br />
<span style="font-size: medium;"><span style="font-family: "verdana" , sans-serif; font-size: large;"><span style="background-color: white;"><b>--</b></span><br style="background-color: white; line-height: 18.48px;" /><span style="background-color: white;"><b><a href="https://www.zomdir.com/" style="text-decoration-line: none;">ZOMDir.com</a> is a dynamic directory and a wiki</b></span><br style="background-color: white; line-height: 18.48px;" /><span style="background-color: white;"><b>Everyone is able to add a link in 10 seconds</b></span></span></span><br />
<div>
<span style="font-family: "verdana" , sans-serif; font-size: large;"><b>To learn more view this <a href="https://www.slideshare.net/ZOMDir/zomdir-tour" style="text-decoration-line: none;">Slideshare presentation</a></b></span></div>
ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-38957383846728037322017-09-18T12:05:00.001-07:002019-10-28T06:07:23.342-07:00How to fix broken links<h3>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">When I detect a redirected or broken link with <a href="https://brokenlinks.zomdir.com/">Broken Links at a Glance</a> I follow in general the following steps:</span></div>
<div style="font-size: medium; font-weight: normal;">
<br /></div>
<span style="font-family: "verdana" , sans-serif; font-size: large; font-weight: normal;"><ul>
<li>Follow the link to analyse it </li>
<li>Try another URL of the same site </li>
<li>Try to contact the website owner</li>
<li>Search for an alternative webpage </li>
<li>Remove the link</li>
</ul>
</span></h3>
<h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></h4>
<h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">1. Follow the link to analyse it</span></h4>
<h3>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">Always follow the link to see what happens. </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span><span style="font-family: "verdana" , sans-serif; font-size: large;">When you got a <a href="https://en.wikipedia.org/wiki/HTTP_404">404 Page not found</a> you might go to the next step.</span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span><span style="font-family: "verdana" , sans-serif; font-size: large;">When you link to a website that doesn't exist anymore you might get the error "Server not found". </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span><span style="font-family: "verdana" , sans-serif; font-size: large;">If that's the case and the HTTP error code wasn't <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#503">503</a> assume this link is broken and go to step 4 or depending on the situation to step 5. </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
</h3>
<h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">2. Try another URL of the same site</span></h4>
<h3>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">When you thought you linked to the <a href="https://en.wikipedia.org/wiki/Home_page">homepage</a> of a website and you got a 404 error then it is often easy to navigate to the new homepage of that website.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Update your webpage by replacing the old link with the new address of the homepage.</span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">When you linked to a specific page, it could be that that information is still available at another location. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">So you have to search at that site for the same information. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">When found, you should update your webpage by replacing the old link with the new address. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">When not found, take the next step.</span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
</h3>
<h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">3. Try to contact the website owner</span></h4>
<h3>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">As you probably have experienced, websites aren't as static as you want. However that doesn't always mean that the information is gone. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Due to a website reorganisation the information you want to link to might be at another address. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">When you are not able to find it yourself, you might contact the website owner. Almost every website has a contact information page. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">If you can't find an e-mail address you might try the e-mail address info@websitename.com.</span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">Make clear that you linked to a webpage with information regarding ... and ask what the new address is for this information because the webpage you linked to has vanished. </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
</h3>
<h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">4. Search for an alternative webpage</span></h4>
<h3>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><a href="https://www.rebootonline.com/blog/long-term-outgoing-link-experiment/">Linking out is good practice</a>, so I prefer and advise you to keep linking. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">When all previous steps failed search for another webpage with the information you want to link. </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">Simple use your favorite search engine and hunt for the information you want to link to. </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">Often you will find an alternative. </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">When found, update your webpage by replacing the old link with the new address of the alternative webpage found. </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">Otherwise, you should remove the link as described in the next step.</span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
</h3>
<h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">5. Remove the link</span></h4>
<h3>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">Too bad, the webpage you linked to doesn't exist anymore, and you can't find an alternative webpage to link to.</span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">When that's the case you should update the webpage where you linked from and remove the link completely. </span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">Mind that this might have the consequence that you should rewrite your text.</span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">That said, the process of fixing broken links is relative straightforward. </span></div>
<div style="font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">For the best results, check your links at a regular base. For example every month.</span></div>
<div style="font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
<div style="font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;">Finally I like to tell you something about redirected links and broken links. </span></div>
<div style="font-weight: normal;">
<br /></div>
<div style="font-size: medium; font-weight: normal;">
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span></div>
</h3>
<h3>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Why check redirected links?</span></h3>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Redirected links are often indicated by the <a href="https://en.wikipedia.org/wiki/HTTP_301">HTTP status code 301</a>. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-size: large;"><span style="font-family: "verdana" , sans-serif;">In general a HTTP status code which has the format</span><span style="font-family: "verdana" , sans-serif;"> </span><a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#3xx_Redirection" style="font-family: verdana, sans-serif;">3XX</a><span style="font-family: "verdana" , sans-serif;"> </span><span style="font-family: "verdana" , sans-serif;">indicates a redirected link.</span></span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Often people think -incorrectly- that a redirected link isn't a problem. Okay, sometimes it isn't a problem, but sometimes it is. </span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;">To find out you have to click these links to see where they redirect to.</span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;">From http to https</span></h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">When the redirect is logical, for example from <a href="https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol">http://</a> to <a href="https://en.wikipedia.org/wiki/HTTPS">https://</a> it is advised to update your webpage with the redirected link by removing the old location (http://...) with the new location (https://...). </span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;">By doing this, the next time you check your website for broken links, you have to check fewer redirected links.</span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;">Another system</span></h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">It might happen that the website you link is using now another <a href="https://en.wikipedia.org/wiki/Content_management_system">content management system</a> with the side effect that old pages are redirected. When the redirect is logical update your webpage and replace the old location with the new location. However when the redirect isn't logical, then consider this as a broken link.</span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;">For sale or sold</span></h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">It might happen that the website you link to is gone and a <a href="https://en.wikipedia.org/wiki/Domain_name_speculation">domain name speculant</a> redirects your page to a "domain for sale landing page". You should consider this as a broken link. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">It might happen that the website you link to is now owned by someone else who works in a complete different business. In that case you should consider this as a broken link.</span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;">Hyjacked</span></h4>
<span style="font-family: "verdana" , sans-serif; font-size: large;">It also might happen that the website you link to is hyjacked and is now selling shoes instead of ... whatever you where linking to. Also in this case you should consider this as a broken link. You might consider to warn the original website owner by sending a mail to info@websitename.com. Inform what you have discovered and ask polite to inform you when the website is restored so you are able to restore your link.</span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span><span style="font-family: "verdana" , sans-serif; font-size: large;">What are broken links?</span></h3>
<span style="font-family: "verdana" , sans-serif; font-size: large;">Broken links are often indicated by the <a href="https://en.wikipedia.org/wiki/HTTP_404">HTTP status code 404</a>. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">However other status codes also might indicate a broken link. When the status code starts has the format <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#4xx_Client_errors">4XX</a> or <a href="https://en.wikipedia.org/wiki/List_of_HTTP_status_codes#5xx_Server_errors">5XX</a> the link is probably broken.</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">I have experienced that websites which respond with a 408 or a 500 HTTP status code still might work although the may be a little slow. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">When that's the case you have to decide for yourself if you consider this as a broken link or not. </span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;"><br /></span>
<span style="font-family: "verdana" , sans-serif; font-size: large;">When you link to a small website which probably doesn't get much visitors it might occur that the first time someone visits that website (the broken link checker) the response is slow while at a second visit (you checking the links marked as broken) the response is reasonable.</span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;">A website which responds with a 503 HTTP status code is in maintenance mode. You might ignore this broken link for the moment, however you might assume that in a few days that website will work.</span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;">Hope this helps,</span><br />
<span style="font-family: "verdana" , sans-serif; font-size: large;">Hans</span><br />
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<span style="font-size: large;"><span style="font-family: "verdana" , sans-serif;"><span style="background-color: white;"><b>--</b></span><br style="background-color: white; line-height: 18.48px;" /><span style="background-color: white;"><b><a href="https://www.zomdir.com/" style="text-decoration-line: none;">ZOMDir.com</a> is a dynamic directory and a wiki</b></span><br style="background-color: white; line-height: 18.48px;" /><span style="background-color: white;"><b>Everyone is able to add a link in 10 seconds</b></span></span></span><br />
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<span style="font-family: "verdana" , sans-serif; font-size: large;"><b>To learn more view this <a href="https://www.slideshare.net/ZOMDir/zomdir-tour" style="text-decoration-line: none;">Slideshare presentation</a></b></span></div>
ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-49684703869760763112016-02-29T01:21:00.002-08:002021-01-05T11:46:06.142-08:00Linkbuilding from directories done right<span face=""verdana" , sans-serif" style="font-size: large;">Since the rise of Google linkbuilding is extremely important. The reason? </span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;">Google was the first search engine who used the number of links to a webpage as an indicator of the relevance of that page.</span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;">Links are still relevant</span></h3>
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<span face=""verdana" , sans-serif" style="font-size: large;"><i>Update: March 24, it became in the news that content and links are the number one and two ranking factors (or vice versa). See: <a href="https://searchengineland.com/now-know-googles-top-three-search-ranking-factors-245882">Google's top 3 ranking factors</a>.</i></span><br />
<span face=""verdana" , sans-serif" style="font-size: large;"><br /></span>
<span face=""verdana" , sans-serif" style="font-size: large;">Nowadays linking is still an important indicator. <a href="https://backlinko.com/search-engine-ranking">A study of Backlinko</a> makes clear that ...</span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;"><i>Backlinks remain an extremely important Google ranking factor. We found the number of domains linking to a page <b>correlated with rankings more than any other factor</b>.</i></span></blockquote>
<span face=""verdana" , sans-serif" style="font-size: large;"><br />Another indication that the <a href="http://infolab.stanford.edu/~backrub/google.html">original Pagerank algorithm</a> is still a huge factor comes from this <a href="https://moz.com/blog/accidental-seo-tests-how-301-redirects-are-likely-impacting-your-brand">accidental SEO test from Moz</a>. The concluded that ...</span><br />
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<i><span face=""verdana" , sans-serif" style="font-size: large;">What our data suggests is that, on average, there’s a 15% traffic loss following a 301 redirect; but any individual redirect could be much better, or much worse.<br /> </span><span face=""verdana" , sans-serif" style="font-size: large;"><br /></span><span face=""verdana" , sans-serif" style="font-size: large;">What’s particularly fascinating about this number, 15%, is that <b>it is exactly the amount of PageRank loss Google described in the original PageRank paper</b>. </span></i></blockquote>
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<span face=""verdana" , sans-serif" style="font-size: large;">How to get links the wrong way?</span></h3>
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<span face=""verdana" , sans-serif" style="font-size: large;">Since it is clear that a lot of links helps your website to become higher in the search results people created "fly-by-night" directories and "Private Blog Networks" to create links by them self. </span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;"><br /></span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">It is clear that Google don't like these tactics because they corrupt the search results. So Google declared <a href="https://developers.google.com/search/docs/advanced/guidelines/link-schemes?hl=en&visit_id=637454725928558255-3877545996&rd=1">the war on link schemes</a>.</span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;">Content marketing</span></h3>
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<span face=""verdana" , sans-serif" style="font-size: large;">Therefor a lot of people believe that content marketing is the answer. Write helpful attractive content which help users and people will come, link to you and you will earn a high position in the search results.<br /><br />That doesn't mean that a link from a directory is useless. If the directory has a page with links that belongs to the same category (which could be considered as </span><span face=""verdana" , sans-serif" style="font-size: large;">helpful attractive content</span><span face=""verdana" , sans-serif" style="font-size: large;">) and your link belongs also to this category then it is a perfect fit.</span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">Create helpful links</span></h3>
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<span face=""verdana" , sans-serif" style="font-size: large;">If your link is the only link in a category then it is either a very detailed category either it is suspicious. </span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">A single link on a page could be treated by Google as a link scheme which can negatively impact a site's ranking in search results.</span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">The latest is also the case when your link belongs to another category.<br /><br />So when you add a link to a directory make sure that it is the correct category and that there are other relevant links in that category.<br /><br />Good luck with linkbuilding,<br />Hans</span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;"><br /></span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">By the way, almost as important as links to your site are the links from your site. A study from Reboot Online Marketing learned that <a href="https://www.rebootonline.com/blog/long-term-outgoing-link-experiment/">outgoing links have positive effects</a>. So feel free to link to me ;-)<br /><br /><b>--<br /><a href="https://www.zomdir.com/">ZOMDir.com</a> is a dynamic directory and a wiki<br />Everyone is able to add a link in 10 seconds<br />To learn more view this <a href="https://www.slideshare.net/ZOMDir/zomdir-tour">Slideshare presentation</a></b></span></div>
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ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-13572703910986530292016-02-15T04:02:00.004-08:002021-01-05T11:41:31.996-08:00Linkbuilding is hard, creating a meaningful directory is harder<div class="separator" style="clear: both; text-align: center;">
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<span face=""verdana" , sans-serif" style="font-size: large;">Linkbuilding is hard, however building a link directory is harder. The two main reasons are:</span><br />
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<li>Collecting relevant links related to a subject (location) couldn't be done in a split second;</li>
<li>There is a negative sentiment regarding link directories.</li>
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<span face=""verdana" , sans-serif" style="font-size: large;">Collecting relevant links is hard</span></h2>
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<span face=""verdana" , sans-serif" style="font-size: large;">Collecting relevant links is like content curation. You're not only hunting for relevant links for the subject your are working on, you also have to add these links to the corresponding page of the link directory.</span></div>
<span face=""verdana" , sans-serif" style="font-size: large;"><br />Imagine that you want to create a page about broken link checkers. Often you will start with Google. When I search for broken link checker in <a href="https://www.google.com/search?q=broken+link+checker">Google.com</a> I got the following results in 0.33 seconds:<br /><br /><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiOQLw7ca7VUegakVzGed3z_CQdldTb2SEYrky-4enXsX9QTZNBTlVPouBt7Me6Xr825xJP8CflueyPd9R47Fx9nsN3GX4Bz7N3dm_52MtDj0hj4iDZd6gwi4nb3P20mzDWTxxOjUjhXUEm/s1600/serp+broken+link+checker.png" style="font-family: "Times New Roman"; font-size: medium; margin-left: 1em; margin-right: 1em; text-align: center;"><img border="0" height="640" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiOQLw7ca7VUegakVzGed3z_CQdldTb2SEYrky-4enXsX9QTZNBTlVPouBt7Me6Xr825xJP8CflueyPd9R47Fx9nsN3GX4Bz7N3dm_52MtDj0hj4iDZd6gwi4nb3P20mzDWTxxOjUjhXUEm/s640/serp+broken+link+checker.png" width="616" /></a><br /><br />The top 10 links I found* are:</span><br />
<ol><span face=""verdana" , sans-serif" style="font-size: large;">
<li><a href="https://www.brokenlinkcheck.com/">https://www.brokenlinkcheck.com/</a></li>
<li><a href="https://wordpress.org/plugins/broken-link-checker/">https://wordpress.org/plugins/broken-link-checker/</a></li>
<li><a href="https://www.deadlinkchecker.com/">https://www.deadlinkchecker.com/</a></li>
<li><a href="https://validator.w3.org/checklink">https://validator.w3.org/checklink</a></li>
<li><a href="https://www.powermapper.com/products/sortsite/checks/link-checker/">https://www.powermapper.com/products/sortsite/checks/link-checker/</a></li>
<li>http://www.iwebtool.com/broken_link_checker</li>
<li><a href="https://smallseotools.com/websites-broken-link-checker/">https://smallseotools.com/websites-broken-link-checker/</a></li>
<li><a href="https://wummel.github.io/linkchecker/">https://wummel.github.io/linkchecker/</a></li>
<li><a href="https://www.screamingfrog.co.uk/broken-link-checker/">https://www.screamingfrog.co.uk/broken-link-checker/</a></li>
<li><a href="https://linktiger.com/">https://linktiger.com/</a></li>
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There is more than the first page</span></h4>
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There are more pages about broken link checkers. For example I missed the still famous broken link checker <a href="http://home.snafu.de/tilman/xenulink.html"><b>Xenu's Link Sleuth</b></a>. </span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;"><br /></span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">I also missed ZOMDir's <a href="https://brokenlinks.zomdir.com/">Broken Links at a Glance</a> in the top 10, but hey, that's a relative new link checker. What to expect else :-)</span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;"><br /></span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">However Google indicates that there are more than 1 billion pages found. That is a little bit to much to add to a link directory. </span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;"><br /></span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">So you have to curate which broken link checker, or better said which webpages related to broken link checker, should be listed. That makes a huge difference. </span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;">There are a lot of articles with titles like </span></div>
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<ul>
<li><span style="font-size: large;"><a href="https://www.smartinsights.com/search-engine-optimisation-seo/link-building/site-link-checking-tools/" style="font-family: verdana, sans-serif;">5 essential link checking tools for SEOs, bloggers and ...</a><span face=""verdana" , sans-serif" style="font-size: medium;">,</span></span></li>
<li><span style="font-size: large;"><a href="https://www.wpuniversity.com/blog/5-tools-find-broken-links" style="font-family: verdana, sans-serif;">5 Tools To Check For Broken Links On Your Website ...</a><span face=""verdana" , sans-serif" style="font-size: medium;">, </span></span></li>
<li><span style="font-size: large;"><a href="https://www.shoutmeloud.com/broken-link-checker-websites.html" style="font-family: verdana, sans-serif;">5 Free Broken Link Checker Websites</a><span face=""verdana" , sans-serif" style="font-size: medium;">, </span></span></li>
<li><span style="font-size: large;"><a href="https://www.techsupportalert.com/best-free-web-site-link-checker.htm" style="font-family: verdana, sans-serif;">Best Free Web Site Link Checker</a><span face=""verdana" , sans-serif" style="font-size: medium;"> </span></span></li>
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<span face=""verdana" , sans-serif" style="font-size: large;">and so on. Do you want to add these articles? Remember taking a decision takes time... </span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;">In depth analysis</span></h3>
<span face=""verdana" , sans-serif" style="font-size: large;">Content curation is nothing without an in depth analysis. So you have to take a look at every site you want to add and decide what to do with it. During this process you have to answer questions like:</span></div>
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<li><span face=""verdana" , sans-serif" style="font-size: large;">Do you want to add broken link checkers which checks only one page? </span></li>
<li><span face=""verdana" , sans-serif" style="font-size: large;">Do you want to add online broken link checkers which need a captcha? </span></li>
<li><span face=""verdana" , sans-serif" style="font-size: large;">Do you add all broken link checkers you find or do you select only the best working link checkers?</span></li>
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<span face=""verdana" , sans-serif" style="font-size: large;">Based on your decisions you will have a list of relevant websites related related to broken link checkers. </span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">Almost there</span></h3>
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<span face=""verdana" , sans-serif" style="font-size: large;">The latest step in the process is adding the link to the directory. This should be as easy as possible for the curator. I don't know how other directories work, but at an average I'm able to add a link per minute. </span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;"><br /></span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">So creating a list of 15 links takes me roughly a quarter of an hour.</span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">Believe me, creating a <a href="https://rustyresults.zomdir.com/"><b>relevant list of broken link checkers</b></a> takes hours instead of seconds.</span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;">Negative sentiment regarding link directories</span></h2>
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<span face=""verdana" , sans-serif" style="font-size: large;"><span face=""verdana" , sans-serif" style="font-size: large;">The second reason why creating a link directory is hard is the negative sentiment regarding link directories.</span></span></div>
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For years there had been a negative sentiment regarding link directories. Deservedly because there are a lot of low quality link directories. </span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">Lots of people bought a PHP script and create a link directory for ABC link exchanges to get high position in the search engines. Even worse, they link unrelated, so links regarding completely different subjects where at one page. This makes the pages completely useless for normal users.<br /><br />No wonder that Google stated in 2012 that they will <a href="https://developers.google.com/search/blog/2012/04/another-step-to-reward-high-quality">reward high-quality sites</a> with a algorithm now known as <a href="https://en.wikipedia.org/wiki/Google_Penguin">Pinguin</a>. </span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;"><br /></span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;">As a result a lot of marketeers and search optimalisation specialists started to think that almost all link directories are a no go area.</span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;">A turning tide?</span></h2>
<span face=""verdana" , sans-serif" style="font-size: large;">I think the tide turns at this moment. <a href="https://backlinko.com/search-engine-ranking">A study of Backlinko</a> makes clear that ...</span></div>
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<span face=""verdana" , sans-serif" style="font-size: large;"><i>Backlinks remain an extremely important Google ranking factor. We found the number of domains linking to a page <b>correlated with rankings more than any other factor</b>.</i></span></blockquote>
<span face=""verdana" , sans-serif" style="font-size: large;"><br />As <a href="https://www.searchenginewatch.com/2013/09/26/major-search-engines-and-directories/">Search Engine Watch</a> wrote in 2013, probably the best think you can do is use your common sense.</span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;"><i>When you look at a directory (or any other link source for that matter) you have to ask yourself, “does it make sense that this link should pass weight to my site?” If you can honestly say “yes” to this then it’s likely a good link.</i></span></blockquote>
<span face=""verdana" , sans-serif" style="font-size: large;"><br />Good luck with linking,<br />Hans<br /><br />* Google results aren't always the same for everyone, so you might find other results</span><br />
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<span style="font-size: large;"><span face=""verdana" , sans-serif"><span style="background-color: white;"><b>--</b></span><br style="background-color: white; line-height: 18.48px;" /><span style="background-color: white;"><b><a href="https://www.zomdir.com/" style="text-decoration: none;">ZOMDir.com</a> is a dynamic directory and a wiki</b></span><br style="background-color: white; line-height: 18.48px;" /><span style="background-color: white;"><b>Everyone is able to add a link in 10 seconds</b></span></span></span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;"><b>To learn more view this <a href="https://www.slideshare.net/ZOMDir/zomdir-tour" style="text-decoration: none;">Slideshare presentation</a></b></span></div>
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ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.comtag:blogger.com,1999:blog-2754915272861373823.post-64114830817136703312014-12-30T07:45:00.004-08:002021-01-05T11:24:01.036-08:00Whichloadsfaster<span face=""verdana" , sans-serif" style="font-size: large;">In the past I used at a regular base whichloadsfaster.com. Recently I discovered that this website doesn't work any more. Luckily <a href="https://www.linkedin.com/in/ryanwitt">Ryan Witt</a>, who has conceived and written <b>whichloadsfaster</b>, has stored the original code at <a href="https://github.com/ryanwitt/whichloadsfaster">GitHub</a>. Besides that Ryan has stated at the about page that:</span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;"><i><b>whichloadsfaster </b>is open source, written in HTML and JavaScript and runs entirely on the client-side. You can host the files on your own site and tweak them to suit your own nefarious plans. We promise not to tell.</i></span></blockquote>
<span style="font-size: large;"><span face=""verdana" , sans-serif">Although it is not the core business of <a href="https://www.zomdir.com/">ZOMDir.com</a>, I created <a href="https://whichloadsfaster.zomdir.com/">my own version of whichloadsfaster</a>.</span></span><br />
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<span face=""verdana" , sans-serif"><a href="https://whichloadsfaster.zomdir.com/">whichloadsfaster.zomdir.com</a> is slightly different from the GitHub version.</span></span><br />
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<li><span face=""verdana" , sans-serif" style="font-size: large;">The order of the menu items is more logical;</span></li>
<li><span style="font-size: large;"><span face=""verdana" , sans-serif">There is now a copyright statement according to the </span><a href="https://github.com/ryanwitt/whichloadsfaster/blob/master/LICENSE" style="font-family: Verdana, sans-serif;">license</a><span face=""verdana" , sans-serif">;</span></span></li>
<li><span face=""verdana" , sans-serif" style="font-size: large;">Some texts are changed (mainly on the splash screen);</span></li>
<li><span style="font-size: large;"><span face=""verdana" , sans-serif">The stats (</span><a href="https://marketingplatform.google.com/about/analytics/" style="font-family: Verdana, sans-serif;">Google Analytics</a><span face=""verdana" , sans-serif"> and </span><a href="https://clicky.com/" style="font-family: Verdana, sans-serif;">Clicky</a><span face=""verdana" , sans-serif">) are removed;</span></span></li>
<li><span face=""verdana" , sans-serif" style="font-size: large;">The default behavior is now serial instead of parallel;</span></li>
<li><span face=""verdana" , sans-serif" style="font-size: large;">There is a favicon now.</span></li>
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<span face=""verdana" , sans-serif">The most important change however is the accuracy, now the duration is rounded at 100ms due to the fact that there was a huge deviation when you repeat tests for really fast webpages like <a href="https://example.zomdir.com/">example.zomdir.com</a> and <a href="https://example.com/">example.com</a>.</span></span><br />
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<span face=""verdana" , sans-serif">Hope that this tool give you a clue about the performance of your website.</span></span><br />
<span face=""verdana" , sans-serif" style="font-size: large;">Hans</span><br />
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<span face=""verdana" , sans-serif"><span style="background-color: white;"><b>--</b></span><br style="background-color: white; line-height: 18.48px;" /><span style="background-color: white;"><b><a href="https://www.zomdir.com/" style="text-decoration: none;">ZOMDir.com</a> is a dynamic directory and a wiki</b></span><br style="background-color: white; line-height: 18.48px;" /><span style="background-color: white;"><b>Everyone is able to add a link in 10 seconds</b></span></span></span><br />
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<span face=""verdana" , sans-serif" style="font-size: large;"><b>To learn more view this <a href="https://www.slideshare.net/ZOMDir/zomdir-tour" style="text-decoration: none;">Slideshare presentation</a></b> </span></div>
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ZOMDirhttp://www.blogger.com/profile/08715432864169066494noreply@blogger.com