Speed & Performance

Page speed, Core Web Vitals and mobile-friendliness testing. 15 free tools in this category.

Test any URL with Google PageSpeed Insights and get scored, prioritized fixes.

Check real-user LCP, INP and CLS from the Chrome UX Report for any URL or origin.

Audit viewport, tap targets, font sizes and responsive behavior of any page.

Compress JPG/PNG images and convert to WebP in your browser — no upload, no limits.

Measure a page’s total weight and see which resources — images, scripts, CSS — are heaviest.

Measure real response time to any website from your location — with multi-run averages.

Is it down for everyone or just you? Check any website’s availability instantly.

Check how much a page’s HTML would shrink with GZIP compression — and whether it’s worth fixing.

Find the scripts and stylesheets that delay first paint — the classic PageSpeed complaint, explained.

Generate .htaccess and nginx rules for browser caching, GZIP/Brotli and keep-alive.

Resize images to exact pixel dimensions in your browser — single or batch, free.

Convert images between PNG, JPG and WebP formats instantly — no upload.

Convert images to Base64 data URIs for inline CSS/HTML embedding.

Estimate load time for any page size across 3G, 4G, 5G and broadband speeds.

Calculate missing dimensions for any aspect ratio — 16:9, 4:3, custom — instantly.