Interactive Hreflang Validator
SEOValidate hreflang code syntax for international SEO workflows and multilingual pages.
Hreflang input
Validate a set of hreflang codes like en, en-US, fr-FR, or x-default.
Validation output
Run validation to see the result.
How to Use Hreflang Validator
Enter an hreflang code and validate whether it matches the expected locale-style syntax used in multilingual SEO workflows. This tool is useful when checking tags for international sites, alternate language pages, and region-specific content variants. It is designed as a fast syntax validator rather than a full crawl-based hreflang audit.
Enter the hreflang code
Add a code such as en, en-us, or fr-ca that you want to validate.
Run validation
Check whether the submitted code matches the expected hreflang syntax pattern.
Review the result
Confirm whether the code looks valid before using it in markup or page logic.
Apply it carefully
Use the validated code in hreflang tags, alternate URLs, or international SEO documentation.
Frequently Asked Questions
What is hreflang?+
Why validate hreflang codes?+
Does this audit whole pages?+
Who is this useful for?+
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