Hreflang annotations list the alternate versions of a page with a language and optional region code, such as en-gb or fr. They can live in the HTML head, HTTP headers or the XML sitemap.
Each version must reference the others, including itself, for the set to be valid.
Without hreflang, search engines may show the wrong language version or treat translations as duplicates.
VisibilityKit Crawler reads hreflang annotations during a crawl, so you can check that alternate versions exist and point at pages that return 200.
No. It helps search engines choose which version to show, not how high.
The fallback version for users whose language or region does not match any listed version.
An HTML link element that tells search engines which URL is the preferred version of a page.
The same or very similar content reachable at more than one URL.
A systematic check of a website's crawlability, indexability, links, redirects and on-page elements.
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