Perfect for Developers & Designers
Compare designs to implementations, verify visual specifications, and align mockups with pixel-perfect accuracy.
Overlay images on any website with pixel-perfect control
Everything you need to compare designs and align mockups with precision
Use natural dimensions, set custom width in pixels, or fullscreen mode
Adjustable opacity (0-100%) and configurable z-index for layer stacking
Drag with mouse, use X/Y offsets, or keyboard controls (arrow keys)
Upload any image, adjust settings, and see changes in real-time
No data collection, no tracking, all processing happens locally
Move overlay with arrow keys (1px) or Shift+arrows (10px)
Compare designs to implementations, verify visual specifications, and align mockups with pixel-perfect accuracy.