INP · high impact

Minimize main-thread work

The browser's main thread is too busy executing JavaScript to respond to user clicks.

Why it matters

This is the primary cause of poor Interaction to Next Paint (INP).

How to fix it in WordPress

  1. Delay all non-critical JavaScript until user interaction.
  2. Remove unnecessary plugins that inject heavy tracking or UI features.

How to verify the fix

  • Verify INP and TBT scores improve.

Related INP fixes

Reduce unused JavaScript →Delay heavy third-party scripts →Google Analytics / Tag Manager is blocking the page →

Find out which of these your site has.

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