Squarespace fix guide
Third-Party Scripts Significantly Impact Performance on Squarespace
Third-party scripts (analytics, ads, widgets) contribute significantly to page load time and main thread blocking.
Issue ID: CWV-THIRD-PARTY-001Severity: moderateEffort: M
Why this matters
Third-party scripts (analytics, ads, widgets) contribute significantly to page load time and main thread blocking. This affects load speed, Core Web Vitals, and how many visitors stay long enough to convert.
Squarespace fix path
How to fix this on Squarespace
Check page settings, navigation, and code injection.
- 1Identify whether this is page-level or site-level.
- 2Apply the fix.
- 3Republish and confirm.
After you fix it
- ✓Check Lighthouse third-party summary and confirm reduced impact
Same fix, other platforms
Fix third-party scripts significantly impact performance on a different CMS
Other fixes
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