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ConvertAnyVideo

Compress PNG

Make PNG images up to 80% smaller by reducing the number of colours with smart dithering. Transparency is kept and the change is nearly invisible.

or drop files here

Up to 1 GB per file · Files never leave your device

  • 100% free
  • No sign-up
  • No upload — private
  • No watermark

How to use Compress PNG

  1. Add PNG images

    Choose one or many PNG files, or drop them on the page.

  2. Compress

    Each PNG is reduced to a smart palette of up to 256 colours and optimised with OxiPNG.

  3. Download

    Save the smaller PNGs one by one or all together as a ZIP.

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Frequently asked questions

How can a PNG get so much smaller?

A normal PNG can store millions of colours. Most images look the same with a carefully chosen palette of 256 colours, which takes far fewer bytes. Gentle dithering keeps gradients smooth.

Is the PNG still transparent?

Yes. The palette includes transparent and semi-transparent colours, so cut-outs and soft shadows stay intact.

Can I compress PNG without any quality change?

Yes. Choose the Light level: the image data stays exactly the same and only the file structure is optimised.

Are my files uploaded?

Your files stay on your device. Conversion runs inside your own web browser, so your files are never uploaded to our servers or anyone else’s. Nobody can see them, and nothing is stored after you close the tab.

Is it free?

Yes, it’s completely free. There’s no sign-up, no watermark and no limit on how many files you convert. Each file can be up to 1 GB.