2024年12月14日A robots.txt file tells search engines what to crawl and what not to crawl but can’t reliably keep a URL out of search results—even if you use a noindex directive. If you use noindex in robots.txt, the page can still appear in search results without visible content. Google never offi...
2022年2月11日Ambiguities in the current specification http://www.kollar.com/robots.html A means of canonicalizing sites, using: HTTP-EQUIV HOST ROBOTS.TXT ALIAS ways of supporting multiple robots.txt files per site ("robotsN.txt") ways of advertising content that should be indexed (rather than just restrict...