| noindex (meta tag) | Disallow (robots.txt) |
|---|
| Controls indexing: do not show the page in results | Controls crawling: do not visit the URL |
| Google must crawl the page to see the tag | Google never reads the page, so it cannot see a noindex there |
| The right way to keep a page out of search | A blocked URL can still be indexed (without content) if others link to it |
<meta name="robots" content="noindex">
If a page is blocked in robots.txt, Google cannot read the noindex tag, so it may stay in the index. To remove a page, allow crawling and add noindex.
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