Compress PNG Without Losing Quality
Smaller PNGs, transparency intact, processed entirely on your device.
100% in your browser — files never uploaded
PNG re-encodes losslessly — switch to Target size for real savings, or convert photos to JPG/WebP for the biggest reduction.
Results appear here the moment you add images.
How PNG compression works (and why photos stay large)
PNG is a lossless format: it never throws detail away, which is why a photographic PNG stays stubbornly large no matter what you do. This tool shrinks PNGs by intelligently reducing dimensions and re-encoding — perfect for oversized screenshots and graphics. If your PNG is actually a photo, converting it to JPG or WebP will cut the size by 5–10× with no visible difference.
Compress PNG without losing transparency
Transparency (the alpha channel) survives compression here untouched — logos, icons and cut-out graphics keep their clear backgrounds. That is the key difference from converting to JPG, which has no alpha channel and flattens transparent areas onto white. Compress when you need PNG features; convert when you only need a smaller picture.
Shrinking Retina screenshots the smart way
Screenshots from high-DPI displays are captured at 2× or 3× their visual size, which doubles or triples the file weight for no benefit in documents and tickets. Halving a Retina screenshot’s dimensions typically cuts the file by 60–75% while looking identical at normal zoom. Drop one in and compare the preview — the saving is usually dramatic.
Frequently asked questions
Will my PNG keep its transparent background?
Yes. Compression preserves the alpha channel completely. Only converting to JPG removes transparency.
Why is my PNG photo still big after compressing?
PNG is lossless, so photographic detail cannot be discarded. Convert photos to JPG or WebP instead — that is where the big savings are.
Does this reduce image quality?
Re-encoding at the same dimensions is lossless. Choosing a smaller size reduces resolution — the preview shows the result before you download.
Are my files private?
Completely. Everything runs in your browser; no PNG is ever uploaded.
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Data verified: 2026-06-11 · All processing happens in your browser — no files are ever uploaded.