OverlayPeek — overlay, inspect, live CSS

Pixel-perfect overlays with unlimited layers, a CSS inspector and live CSS editing. Free. No pop-ups. No tracking.

Compare your build with the design, read any element's CSS, and tweak it live — in one small toolbar. OVERLAY — free, no layer limit • Drop, paste or pick any design export; @2x/@3x files open at the right size • Opacity, difference blend (spot 1px offsets), lock, drag, arrow-key nudge • Layers are saved per page; turn on "Keep on this site" to have them back after reload INSPECT • Click any element: font, color, spacing, layout and effects in five tidy groups • DevTools-style margin/padding box • Every color and font on the page — click to copy LIVE CSS • Change any value and see the page update instantly (↑/↓ steps numbers) • Undo, reset, and Copy CSS as a clean diff with the old values in comments RESPECTS YOU • No pop-ups, no donation nags, no ads, no analytics, no account • Reads a page only after you click the icon (Alt+P) • Your designs never leave your computer