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Shopify fix guide

Invalid Language Attribute on Shopify

The lang attribute value does not match a valid BCP 47 language tag, or appears inconsistent with the detected page language.

Issue ID: TECH-LANG-MISMATCH-001Severity: minorEffort: S

Why this matters

The lang attribute value does not match a valid BCP 47 language tag, or appears inconsistent with the detected page language. This affects crawlability, rendering, and whether the site can be interpreted correctly by search engines.

Shopify fix path

How to fix this on Shopify

Expect to handle these in theme settings or code.

  1. 1Open the Theme Customizer or edit theme code.
  2. 2Apply the setting or template fix.
  3. 3Preview and publish the change.

After you fix it

  • Inspect <html lang="..."> and confirm it matches the page language

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