Speed Analyzer

Free Chrome extension that measures page load performance with detailed metrics, A-F grading, and actionable optimization tips.

Install for Chrome

Features

Performance Metrics

DOM Content Loaded, Page Load, TTFB, request count, DOM elements, and estimated page size — all at a glance.

A–F Grading

Instant visual score from A (under 1 s) to F (over 5 s) with a color-coded circular gauge.

Optimization Tips

Specific suggestions: slow TTFB, too many DOM nodes, large page size, excessive requests, and more.

Analysis History

Last 5 analyses saved locally so you can compare performance across different pages and sessions.

FAQ

How does Speed Analyzer measure performance?
It uses the browser's native Performance API (Navigation Timing and Resource Timing) to capture accurate load metrics directly from Chrome.
Is my data sent anywhere?
No. All analysis runs locally in your browser. History is stored in chrome.storage.local and never leaves your machine.
Which pages can I analyze?
Any page you can visit in Chrome. Click the extension icon, press "Analyze This Page," and get instant results.

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