About this tool
Check multilingual hreflang sets before release so alternate URLs stay consistent across languages and regions.
This SEO tool is built for pre-publish QA and implementation support rather than vague optimization advice. It helps teams check one search-facing signal cleanly before a page, template, or release goes live.
- 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
Enter the relevant metadata, markup, URL set, or export data into the tool above, then review the checks and corrected output. Use the result to fix the source template, CMS field, or deployment rule before shipping changes.
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
Technical SEO work is usually about preventing avoidable mistakes before crawlers and users see them. Tools like this are most valuable when they make those checks concrete and fast.
Related search intents
hreflang checker, hreflang validator, check hreflang tags, international SEO tool.