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Squarespace fix guide

Render-Blocking JavaScript Detected on Squarespace

Synchronous <script> tags in the <head> block page rendering. The browser must download and execute these scripts before painting any content.

Issue ID: CWV-RENDER-BLOCK-JS-001Severity: moderateEffort: M

Why this matters

Synchronous <script> tags in the <head> block page rendering. The browser must download and execute these scripts before painting any content. 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.

  1. 1Identify whether this is page-level or site-level.
  2. 2Apply the fix.
  3. 3Republish and confirm.

After you fix it

  • ✓Run Lighthouse and confirm no render-blocking JS warnings

Same fix, other platforms

Fix render-blocking javascript detected on a different CMS

Other fixes

More Squarespace fixes

Parents

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