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Webflow fix guide

Excessive JavaScript Execution Time on Webflow

Total JavaScript execution time on the main thread is excessive, competing with rendering and user interaction handling.

Issue ID: CWV-JS-EXEC-001Severity: moderateEffort: L

Why this matters

Total JavaScript execution time on the main thread is excessive, competing with rendering and user interaction handling. This affects load speed, Core Web Vitals, and how many visitors stay long enough to convert.

Webflow fix path

How to fix this on Webflow

Use page settings, Designer, or project settings.

  1. 1Locate the element or setting causing the issue.
  2. 2Update it in Webflow.
  3. 3Publish and validate the output.

After you fix it

  • Check Lighthouse "Reduce JavaScript execution time" audit

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