Hreflang Checker

Online hreflang validation and testing tool for international SEO. Lets you quickly test and check the hreflang implementation of any URL the way a search engine sees it — reading annotations from the HTML head, HTTP headers and XML sitemaps, and verifying return links across the whole cluster.

What does the "Hreflang Checker" tool do?

The tool fetches the URL and collects hreflang annotations from the three sources search engines actually use: link tags in the HTML head, the HTTP Link response header, and (optionally) your XML sitemap. It then fetches every declared alternate to confirm the return link, HTTP status, indexability and canonical consistency.

The result is the same picture Google forms when it processes your international cluster, presented in a clear table with a severity summary.

How does the Hreflang Checker help SEO specialists and website owners?

It diagnoses the technical errors that quietly break international targeting: missing return tags, broken self-references, canonical and noindex conflicts, invalid language or region codes, relative URLs and redirecting alternates.

It also catches less obvious problems — hreflang injected by JavaScript that Google may not execute, alternates pointing at staging or preview hosts, cross-domain alternates and mismatches between the page and the sitemap.

Typical uses of the Hreflang Checker tool

• Verify that every page in a cluster references itself and all alternates.
• Confirm return links are reciprocal between language versions.
• Detect canonical or noindex conflicts that make Google ignore hreflang.
• Validate language-region codes (for example en-GB, not en-UK).
• Test that x-default is present exactly once and points at a selector page.
• Compare on-page annotations against the XML sitemap.
• Spot staging or preview URLs leaking into the index through hreflang.

How hreflang works

Pages that are translations or regional variants form a cluster. Every page must list every page, including itself, using absolute URLs, and every reference must be reciprocal: if page A points to page B, page B must point back to A — otherwise the annotation can be ignored.

There are three valid delivery methods: link tags in the head (for normal HTML pages), the HTTP Link header (the only option for non-HTML files such as PDFs), and xhtml:link entries in an XML sitemap. Use a bare language code (en, de) when one version serves all speakers, and add a region (en-us, en-gb) only when the content actually differs by country.

Comparison of the "Hreflang Checker" tool with other tools

FAQ

• Does hreflang improve rankings?

  Not directly. Hreflang routes the right localized version to the right user and helps avoid duplicate-content filtering between near-identical regional pages.

• How long does Google take to process hreflang?

  It depends on how often your pages are recrawled, often a couple of weeks and sometimes longer. Changes are not instant.

• What is a return tag and why does it matter?

  Hreflang must be reciprocal, so if page A points to page B then page B must point back to A. A missing return tag can make search engines ignore the whole annotation.

• Should I use en-us and en-gb if the content is identical?

  If the pages are truly the same, a single en version is simpler and safer. Use regional codes only when the content genuinely differs by country.

• Should hreflang go in HTML tags or HTTP headers?

  Use link tags in the head for normal HTML pages, and the HTTP Link header for non-HTML files such as PDFs.