Hreflang Verification100% Free & Client-SideReal-Time Computation

Hreflang Validator

Validate hreflang tags for bidirectional return links, valid ISO 639-1 language codes, and formatting.

All 4 Regional Annotations Valid

Valid ISO 639-1 language codes (en, es, fr) paired with ISO 3166-1 country codes. Includes fallback x-default declaration.

How to Use Hreflang Validator

1Step 1

Paste your set of hreflang tags.

2Step 2

Run validation to check ISO code accuracy and syntax.

3Step 3

Verify that bidirectional reciprocal links exist between all regional alternates.

If page A links to page B as an alternate, page B MUST link back to page A. If it doesn't, Google ignores the hreflang annotation.