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Hreflang Validator API
Validate hreflang tags and check every return link.
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.
Hi, hreflang breaks quietly: one missing return link and Google ignores the whole declaration. This API fetches the page, validates every declaration, then fetches up to 10 alternates (the first 10 in declaration order) and checks that each links back. If some alternates could not be checked, the response says so with returnLinks.partial. Not covered, stated in the docs: XML sitemap hreflang, JavaScript rendering, judging a page's actual language, and which version Google really serves. Feedback welcome.
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About Hreflang Validator API on Product Hunt
“Validate hreflang tags and check every return link.”
Hreflang Validator API was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #485 on the daily leaderboard. 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.
Hreflang Validator API was featured in API (98.9k followers) and Developer Tools (522.9k followers) on Product Hunt. Together, these topics include over 105.7k products, making this a competitive space to launch in.
Who hunted Hreflang Validator API?
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GlowHalo
Hi, hreflang breaks quietly: one missing return link and Google ignores the whole declaration. This API fetches the page, validates every declaration, then fetches up to 10 alternates (the first 10 in declaration order) and checks that each links back. If some alternates could not be checked, the response says so with returnLinks.partial. Not covered, stated in the docs: XML sitemap hreflang, JavaScript rendering, judging a page's actual language, and which version Google really serves. Feedback welcome.