Squarespace fix guide
Invalid Language Attribute on Squarespace
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.
Squarespace fix path
How to fix this on Squarespace
Most of these are site-style or navigation settings.
- 1Review design and navigation settings.
- 2Change the relevant global site setting.
- 3Republish and verify.
After you fix it
- ✓Inspect <html lang="..."> and confirm it matches the page language
Same fix, other platforms
Fix invalid language attribute on a different CMS
Other fixes
More Squarespace fixes
See every Squarespace issue on your site
This is one issue of many the full audit checks. Run a free scan to see what else might be holding your site back.
Run Free Audit