Hreflang Validator API
Validate hreflang tags and check every return link.
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Checks a page's hreflang annotations against Google's documented rules: HTML link tags and HTTP Link headers, ISO 639-1 language and ISO 3166-1 region codes, x-default, self-reference and canonical mismatches. It also fetches up to 10 alternates to verify each one links back, because Google ignores a declaration without a return link. An offline validate endpoint covers staging HTML. Returns a score, grade and issues with stable codes.
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PH · launched Oct 27, 2026 · 1 upvote (top 67%)
- Horizontal
- Dev tools
- Developer
- Not AI
- Commercial product
- API
- Developer Tools
Similar launches
See all 142 similar launches →Could you build this?
Yes The validator fetches pages, parses HTML link tags and HTTP headers, checks language and region codes against standard lists, and follows return links, all of which are well-specified and straightforward to implement as an API.
Competitors
Other products that read as similar to this one : 142 launches clear the similarity bar, closest 8 shown.
Attention rank: #55 of 143 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 352 days after the earliest competitor.
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