Paste page source — or fetch a live URL — and get honest static hints about what slows the page down, with concrete fixes.
🔒 Privacy-conscious by design. This tool needs an internet connection for part of its work (for example, fetching a public resource). Only the data required for that step leaves your device — nothing is logged or stored, and everything else runs locally.
No — these are static HTML hints, not measured timings. They point at likely problems; PageSpeed Insights gives you lab and field data.
Without width and height the browser can't reserve space, so content jumps as images load — that is Cumulative Layout Shift.
| Platform | Supported | Offline | Local | Server | Network |
|---|---|---|---|---|---|
| WEB | Yes | No | Yes | No | Required |
| PWA | Yes | No | Yes | No | Required |
| ANDROID | Yes | No | Yes | No | Required |
| IOS | Yes | No | Yes | No | Required |
Score a page's on-page SEO from its HTML — title, headings, images and social tags.
Detect Google Analytics, Tag Manager, Meta Pixel and other trackers in page HTML.
Shrink JPG, PNG and WebP by quality or to an exact target size in KB — batch supported, all on your device.
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