Catalog · Hreflang · Warning

Invalid hreflang code

An hreflang attribute has an invalid language / region code.

Check ID INVALID_HREFLANG · Category Hreflang · Available on every plan
Sec. CD.01 · Detail ◊What, why, how reference content · updated continuously

How to fix it

Use a valid ISO 639-1 language code, optionally with an ISO 3166-1 region (for example, en-GB).

Wrendex catches invalid hreflang code on every audit. No credit card · All 170+ checks · Full PDF report
Run free audit →