Compress PNG images
A PNG with millions of colours can often be saved with 256 or fewer colours with almost no visible difference. The tool picks the most important colours, optionally adds dithering for smooth gradients, and saves an indexed PNG that is usually several times smaller. Transparency is kept.
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Choose a file to see a preview and available settings.
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How to use: Compress PNG
Choose images
Add PNG, JPG, or WebP images to save as a smaller PNG.
Pick the colour count
256 colours look almost identical to the original. Fewer colours give a smaller file.
Compare and download
See the saving for each image and download the result.
Frequently asked questions
What does dithering do?
Dithering mixes dots of nearby colours, so gradients and shadows look smooth even with fewer colours. Turn it off for logos with flat colours.
Why is my photo still large?
Photos have many shades, so PNG cannot shrink them much. For photos, use JPG or WebP in the Compress images tool.
Is transparency lost?
No. Transparent and semi-transparent pixels are kept in the colour palette.