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Why Google crawls pages but skips indexing them, and how to diagnose it

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When Google Search Console flags a URL as 'Crawled, currently not indexed,' it means Google deliberately chose not to add that page to its index after fetching it. A common cause is a canonical mismatch, where Google overrides the site's own canonical tag and selects a different preferred URL. Other culprits include cloaking, where Googlebot receives different content than a regular browser, and JavaScript-rendered pages that appear as blank or incomplete HTML to the crawler. Redirect chains passing through multiple hops before reaching a final URL can also reduce a page's indexing priority. Developers can diagnose these issues using Google's URL Inspection API, user-agent-specific curl comparisons, and redirect tracing tools before making any content changes.

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