Soft 404
In one line
A soft 404 is a page that has no real content — or shouldn't exist anymore — but still returns 200 OK, so search engines misread it as a thin but live URL.
Going deeper
Soft 404s typically come from two patterns: zero-result internal search pages returning 200 OK, and 'Not Found' template pages that still get indexed because the server insists everything is fine. To users they look like a 404; to bots, the server says otherwise.
Once Search Console flags a URL as Soft 404, the page effectively drops out of the index — and at scale these can pile up as thin-content signals that drag the whole site down. It is surprisingly common to find tens of thousands of them on large sites.
The fix is straightforward. Return real 404 or 410 status codes for URLs that genuinely should not exist, and either noindex zero-result search pages or fill them with useful recommendations so they leave the thin-content bucket.
Related terms
404 Error
A 404 error is the HTTP response signalling that the requested URL does not exist — affecting both user experience and crawl efficiency.
SEO410 Gone
410 Gone is the HTTP status that tells crawlers a page has been permanently removed — clearer than 404, because it explicitly says the page is not coming back.
SEOHTTP Status Codes
HTTP status codes are the standard server responses (200, 301, 404, 500 and so on) that tell crawlers how to treat a request — and in SEO they directly steer indexing decisions.
SEOThin Content
Thin content is content that adds little or no value for users — shallow, duplicated, or auto-generated — and it tends to get downgraded under Google's quality systems.
SEOnoindex / nofollow
noindex tells search engines not to add a page to the index, while nofollow tells them not to follow a specific link — both are page-level robots directives.
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