PNG Compressed PNG
Convert PNG to Compressed PNG free. No signup. Files deleted after 1 hour.
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About Compress PNG
Below 95 on the slider, Compress PNG runs pngquant, which turns the image into a palette of at most 256 colors: about 205 at the default of 75, and fewer as the slider goes down. From 95 up the palette step is skipped and the PNG is only saved again with the strongest zlib compression and adaptive filtering. Below 95, a result that isn't smaller than the original makes the tool try lower qualities.
Frequently asked questions
Is palette compression safe for photos?
It works, but photos have far more than 256 colors, so smooth gradients such as skies can show bands. Screenshots, logos and interface graphics usually look the same afterwards. Keep the slider at 95 or higher to skip the palette step.
Why is my PNG still big?
PNG is a lossless format, so a photo saved as PNG stays large, and at 95 or higher the tool doesn't reduce colors at all. Converting a photo to JPG or WebP makes a much bigger difference.