About this tool
Check multilingual hreflang sets before release so alternate URLs stay consistent across languages and regions.
Hreflang Checker is built for people who need to check hreflang locale and url sets without leaving the browser. Check multilingual hreflang sets before release so alternate URLs stay consistent across languages and regions. On this page, the main job is narrow and practical: validates locale codes like en, en-us, ko-kr, and x-default, then flags duplicate codes, duplicate urls, and invalid absolute urls.
- Validates locale codes like en, en-US, ko-KR, and x-default.
- Flags duplicate codes, duplicate URLs, and invalid absolute URLs.
- Generates cleaned alternate link tags from valid entries.
How to use Hreflang Checker
Prepare page URLs, metadata, markup, or audit exports into the tool above, review the result, and export clear recommendations you can push back into templates or CMS fields. If you are checking an edge case, start with "Does this tool support x-default?" and verify the output against that scenario.
When this tool is useful
- Review alternate language and region mappings before launching localized pages.
- QA hreflang exports from a CMS or spreadsheet before engineering deploys them.
- Catch duplicate locale rows or missing x-default entries during international SEO audits.
Practical tips
- Keep alternate URLs absolute and consistent in protocol and host when possible.
- Use x-default for the fallback experience when you have a global selector or catch-all page.
- Validate the final live HTML too, because generated tags can still be altered by templates.
Why people use this tool
Pages like this earn search visibility when they solve one specific job better than a generic toolbox. Hreflang Checker lines up with searches such as hreflang checker, hreflang validator, and check hreflang tags because people usually want crawl-facing accuracy, implementation clarity, and lower release risk inside a real technical SEO QA and publishing workflow.
Related search intents
hreflang checker, hreflang validator, check hreflang tags, international SEO tool.