Compress PNG Without Visible Quality Loss

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Compress PNG Without Losing Quality

Shrink image file size with a live before/after preview.

About this option

JPEG-style compression blurs edges, which ruins logos, screenshots and flat illustrations. For those, the better way to shrink a PNG is to reduce it to an efficient colour palette and save it losslessly. This page opens the compressor in Lossless mode.

When to use it

Shrinking a logo, icon or UI screenshot without blurring its edges
Optimising PNG assets for a website
You need transparency preserved while reducing file size

How to use it

1Drop your PNG files — Lossless mode is already selected
2Choose the number of palette colours (fewer means smaller files)
3Click Compress and compare before and after
4Download the optimised PNGs

Frequently asked questions

Is it truly lossless?

The encoding is lossless, but reducing the palette to a set number of colours can change very subtle shades. Use 256 colours for the closest match.

Does it keep transparency?

Yes. The output remains a PNG with its transparent areas intact.

When should I use JPEG-style compression instead?

For photographs. Photos shrink far more with quality-based compression and show little visible change.