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Robots.txt Test

What is it?

Check if your website is using a robots.txt file. When search engine robots crawl a website, they typically first access a site's robots.txt file. Robots.txt tells Googlebot and other crawlers what is and is not allowed to be crawled on your site.

Pass rate:

  • Top 100 websites: 99%
  • All websites: 85%
Pass rates of Top 100 US websites











How do I fix it ?

In order to pass this test you must create and properly install a robots.txt file.

For this, you can use any program that produces a text file or you can use an online tool (Google Webmaster Tools has this feature).

Remember to use all lower case for the filename: robots.txt, not ROBOTS.TXT.

A simple robots.txt file looks like this:

User-agent: *
Disallow: /cgi-bin/
Disallow: /images/
Disallow: /pages/thankyou.html

This would block all search engine robots from visiting "cgi-bin" and "images" directories and the page ""


  • You need a separate Disallow line for every URL prefix you want to exclude
  • You may not have blank lines in a record because they are used to delimit multiple records
  • Notice that before the Disallow command, you have the command: User-agent: *. The User-agent: part specifies which robot you want to block. Major known crawlers are: Googlebot (Google), Googlebot-Image (Google Image Search), Baiduspider (Baidu), Bingbot (Bing)
  • One important thing to know if you are creating your own robots.txt file is that although the wildcard (*) is used in the User-agent line (meaning "any robot"), it is not allowed in the Disallow line.
  • Regular expressions are not supported in either the User-agent or Disallow lines

Once you have your robots.txt file, you can upload it in the top-level directory of your web server. After that, make sure you set the permissions on the file so that visitors (like search engines) can read it.

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