Match thedesign, exactly.

Drop your mockup on the live page. Catch the misaligned padding, the mismatched color, the wrong font size. Ship once, not three times.

How it works

localhost:3000

Stop toggling between
design and browser

Overlay the design directly on your page for a pixel‑perfect match. Catch every mismatch before it ships, in development or visual QA, whether the code is hand‑written or AI‑generated.

Pixel-Level Control

Arrow keys for 1px moves, Shift+arrows for 10px. Mousewheel opacity, centering, HiDPI scale, touch support, and keyboard shortcuts for fast toggling.

PROLayer rotation

Blend Modes

“Difference” flags every mismatched pixel, a fast visual-regression check against the approved design. “Multiply” and “Overlay” for color and tone.

Multiple Layers & Folders

Drag files in, paste a frame copied from Figma, or load images by URL. Overlays are kept per domain across sessions and tabs. Group them in folders.

FREE2 layers at a time per domain

PROUnlimited layers · Folders

Lock & Click-Through

Lock the overlay, then click through to inspect the DOM with DevTools and tweak CSS live. No toggling required.

Side Panel for Mobile Sites

In DevTools device mode, move the panel to the browser’s side panel. The viewport stays clear; overlays stay on the page. How to check a mobile build

Mockups Stay on Your Device

Layers are stored locally. Image contents are never uploaded, and the addresses of the pages you work on never leave your browser. Privacy policy

What developers say

“For all you detail-obsessed developers, PerfectPixel is like having a microscope for your layouts.”
Hadil Ben Abdallah
Software Engineer, FavTutor
“The ultimate companion for achieving pixel-perfect precision. Indispensable for developers who are meticulous about aligning their code with design specifications.”
Randall Hartman
Developer, Groundwrk
“Great tool! I've been using it for the past 5 years in my pixel-perfect mission.”
Nuno Marques
Web Developer, Chrome Web Store

Compare your next build with the design.