Compress PNG

Lossless PNG compression in your browser. Pixels stay the same and transparent backgrounds stay transparent. Up to 20 files, 10 MB each. Free, no account.

JPG PNG SVG GIF

or drop images here

How to compress a PNG

PNG compression on this page is lossless: the pixels do not change. The file gets smaller by packing data more tightly. Transparent areas stay transparent.

  1. 1

    Select PNG files, up to 20, 10 MB each and 100 MB in total, or drop them onto the page.

  2. 2

    Start compression. This page does not use the JPG quality slider; PNG optimization keeps every pixel.

  3. 3

    Compare the new file size with the original, then download. A PNG that is already tightly packed may barely shrink.

Related image tools

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PNG compression questions

Answers about lossless PNG compression, transparency and file limits.

Does compressing a PNG reduce image quality?

No. This tool uses lossless PNG optimization, so the pixels stay the same. You should still compare the download with the original and keep the source file.

Resize Image

Will a transparent PNG stay transparent?

Yes. Transparent backgrounds remain transparent after compression. JPG compression cannot do that.

Convert to JPG

How many PNG files can I compress, and is it free?

Compression is free and does not require an account. You can select up to 20 PNGs, 10 MB each and 100 MB in total, within 20 megapixels and 10,000 pixels per side.

Crop Image

Why is my compressed PNG still large?

Photos saved as PNG are often large even after lossless packing. If you do not need transparency, convert to JPG and then compress for a smaller photo file.

Compress Image