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...
2021年1月29日Google isn’t one of those search engines. They obey the instructions in a robots.txt file. Just know that some search engines ignore it completely. What does a robots.txt file look like? Here’s the basic format of a robots.txt file: ...