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WordPress fix guide

Long Main Thread Tasks Detected on WordPress

JavaScript tasks exceeding 50ms block the main thread, causing jank and poor responsiveness. This directly impacts INP and user experience.

Issue ID: CWV-LONG-TASKS-001Severity: majorEffort: L

Why this matters

JavaScript tasks exceeding 50ms block the main thread, causing jank and poor responsiveness. This directly impacts INP and user experience. This affects load speed, Core Web Vitals, and how many visitors stay long enough to convert.

WordPress fix path

How to fix this on WordPress

Use the page editor, theme, or SEO tooling depending on where this issue lives.

  1. 1Inspect the page and theme output.
  2. 2Apply the fix in the most direct place.
  3. 3Publish and validate with a re-audit.

After you fix it

  • Use Chrome DevTools Performance panel to confirm no tasks exceed 50ms

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