Poor INP (Interaction to Next Paint) Test Page

This page has blocking JavaScript that creates slow interactions to trigger the poor_inp issue.

INP measures how quickly a page responds to user interactions. Good INP is 200ms or less.

Try Interacting:

What's wrong?

• Heavy JavaScript execution blocks the main thread
• Button takes >200ms to respond to clicks
• No web workers used for heavy computations
• Long tasks aren't broken up
• INP likely exceeds 200ms threshold

Expected Detection:

Severity: Warning

Threshold: > 200ms

Code location: apps/worker/src/performance/web-vitals.ts:64-82

Note: INP requires real user interactions, so automated crawls may not always detect this issue. The crawler uses first-input as a proxy.

How to Fix:

• Optimize JavaScript execution
• Break up long tasks into smaller chunks
• Use web workers for heavy computations
• Defer non-critical JavaScript
• Reduce input delay with requestIdleCallback
• Optimize event handlers

INP Thresholds:

• Good: ≤ 200ms
• Needs Improvement: 200-500ms
• Poor: > 500ms