PNG Compressor

Reduce PNG file size while keeping transparency - all in your browser, 100% private.

PNG is a lossless format, so savings depend on your image. For photos, try WebP Converter for much smaller files.

How to Use PNG Compressor

  1. Upload a PNG image from your device.
  2. Click Compress PNG - the image is re-encoded and metadata is removed.
  3. Compare the file sizes and download the optimized PNG.

Frequently Asked Questions

Is PNG Compressor free?

Yes, it is completely free with no sign-up, no watermarks and no usage limits.

Are my images uploaded to a server?

No. All compression happens locally in your browser. Your images never leave your device.

Will my transparency be kept?

Yes. PNG compression keeps the alpha channel, so transparency and logos stay intact.

Why is my PNG not getting much smaller?

PNG is a lossless format with limited room for compression. For photos, converting to JPG or WebP usually gives much smaller files.