Validator Tools
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Lighthouse-lite Performance Checker
Analyze pasted HTML (or fetch when CORS allows) for title, viewport, alt coverage, script count, and size.
Features
- Score summary
- HTML paste
- Optional fetch
How to use Lite Perf
- 1Paste HTML or try Fetch URL.
- 2Read the lite score.
Examples
Page HTML
Input<html>..Output
Lite score /100
About Lite Perf
Lighthouse-lite Performance Checker provides quick HTML heuristics - not a full Chromium Lighthouse lab run.
Frequently asked questions
No - heuristics only.
Many sites block browser fetch; paste HTML instead.
No.