About this tool
PNG Optimiser lets you choose between 32-bit RGBA, 24-bit RGB (no transparency) and 8-bit quantised (256 colours) output to reduce file size while keeping your image as a PNG.
How it works
- 1Upload a PNG.
- 2Choose output colour depth: 32-bit RGBA, 24-bit RGB or 8-bit quantised.
- 3The tool re-encodes the image and shows the output file size.
- 4Download your optimised PNG.
Common use cases
- ✓Reducing icon and logo file sizes
- ✓Web performance optimisation
- ✓Reducing app asset sizes
- ✓Preparing images for pixel-art distribution
Privacy first. PNG Optimiser runs entirely inside your browser using the HTML5 Canvas API. Your images are never uploaded to any server, stored anywhere or shared with third parties. Everything happens locally on your device.
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