Compress PNG images
PNG is lossless, so it only shrinks a little. Zelio tries, keeps your original if it cannot help, and points you to WebP when that is smaller.
Drop photos here, click to choose, or paste
JPG, PNG or WebP. Up to 50 photos, max 50 MB each.
Honest results
A PNG that cannot shrink is returned untouched.
WebP suggestion
WebP keeps transparency and is usually much smaller.
Private
Runs in your browser; nothing is uploaded.
How it works
- 1Add PNG imagesUp to 50 at once.
- 2CompressEach PNG is re-saved and compared with the original.
- 3Download or switchKeep the smaller file, or convert to WebP.
FAQ
Why does PNG barely shrink?
PNG stores every pixel exactly. Re-saving it cannot throw detail away, so the gain is small.
What should I use instead?
WebP keeps transparency and is usually several times smaller. JPG is smallest for photos without transparency.
Is my PNG changed if it cannot shrink?
No. You get the original file back.
Is transparency kept?
Yes, as PNG or WebP. Converting to JPG turns transparent areas white.