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The W3C link validator balks on any link to http://jigsaw.w3.org/css-validator/; quote: http://jigsaw.w3.org/css-validator/validator?uri=...&profile=css2 What to do: The link was not checked due to robots exclusion rules. Check the link manually. Response status code: (N/A) Response message: Forbidden by robots.txt Line: 419 Note that the CSS Validator even recommends to include, in the pages to be checked, a link to itself; yet, the link checker from the same organisation does not check those recommendend links. Please include in http://jigsaw.w3.org/robots.txt the following code: User-Agent: W3C-checklink Disallow: or, if you want to be more restrictive: User-Agent: W3C-checklink Disallow: /guest-demos/ Disallow: /status/ Disallow: /demos/ Disallow: /HyperNews/ Disallow: /cgi-bin/ Disallow: /Friends/ Disallow: /api/ Disallow: /Benoit/Public/DVDDB/ # Don't exclude validator and docs
After more than 8 months, this simple, yet important, entry in http://validator.w3.org/robots.txt is still missing! (Though, meanwhile, the error message points to <http://validator.w3.org/docs/checklink.html#bot>, where w3.org has documented what you shhould have done, before.)
Sorry, typo. Of course, I had meant to write: After more than 8 months, this simple, yet important, entry in http://jigsaw.w3.org/robots.txt is still missing!
While indeed we give people the choice and tools to give access to checklink, does not mean we want all our services, especially the very heavily-loaded ones like the CSS validator, crawled, by this robot or others. The W3C link checker will keep mentioning that the link hasn't been checked, but that is not an error.