Compress a PNG to under 100KB in your browser — transparency kept, nothing uploaded.
100KB is the most requested PNG ceiling on the site. Logos, screenshots and graphics with flat colour survive it easily; a detailed photograph saved as PNG will need to give up either colours or pixels, and this tool gives up colours first.
PNG is a lossless format, so unlike JPEG there is no quality slider to turn down — saving at “lower quality” produces a byte-identical file. What a PNG actually pays for is the number of distinct colours it contains. This tool reduces the colour count until the file fits your target, and only reduces the pixel dimensions if colour reduction alone cannot get there. Transparency is preserved either way.
For photographs, JPEG at the same file size will almost always look better. PNG is the right choice when you need transparency or crisp flat colour — logos, icons, screenshots and diagrams.
Also try: PNG to 50KB · PNG to 200KB · PNG to 40KB · general PNG compressor
Choose your PNG and click Convert — the output format and the 100KB target are already set. Everything happens in your browser.
Yes. Transparency is preserved; only the number of colours is reduced, and the dimensions only if that is not enough to reach the target.
The PNG format is lossless, but reaching a fixed size means reducing the number of colours, which does change the image. For photographs, JPEG at the same file size will usually look better.