Hreflang Tag Checker – Verify International & Multilingual SEO Setup | SEOcheck.hu
Hreflang Tag Checker – verify language and country targeting before you scale
Use this Hreflang Tag Checker when you are running multiple language or country versions and you want to be sure that search engines understand which URL belongs to which market. Paste a key URL and the tool will fetch the HTML, detect all rel="alternate" hreflang tags, group them by language code and highlight duplicates, missing x-default entries and domain mismatches that can silently break your international SEO.
This is especially useful after migrations, URL changes or CMS template updates, when hreflang implementations often get corrupted. Run the check for your most important money pages in every language, fix the configuration in your templates or tag manager, then upgrade to the SEO Expert plan to combine these checks with full on-page audits and ongoing monitoring in SEOcheck.hu.
Use correct language and region codes
Always use valid ISO language and country codes in hreflang values, such as en, en-GB, en-US or de-AT. Avoid invented codes and make sure they match the real targeting of each version.
Implement symmetric, self-referencing hreflang
Each language version should include a hreflang tag pointing to itself and to every other variant, and those pages should point back to it. Asymmetric or one-directional mappings often cause search engines to ignore your configuration.
Keep domains and canonicals consistent
Make sure hreflang URLs use the same canonical URLs that are declared on each page and that you do not accidentally mix multiple domains or staging URLs. When you migrate, always re-check hreflang configuration before and after go-live.
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