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Compress PNG

Reduce PNG file size online, free. Screenshots, logos and graphics up to 90% smaller, with transparency kept.

  • Free to use
  • No file stored beyond 1 hour
  • Encrypted over TLS 1.2/1.3
  • No watermarks

Drag and drop your files here or click to upload.

Maximum file size is 1GB

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How to compress a PNG

Three steps, in your browser. Nothing to install.

  1. 01

    Add your PNGs

    Drop up to 20 PNG files, or paste a link.

  2. 02

    Pick how small

    Every file starts on Balanced. Open a file's settings to make it smaller or keep more quality, for one file or all of them.

  3. 03

    Compress and download

    Each image stays a PNG with its transparency.

Which setting should I pick?

Balanced suits screenshots and logos. Keep Best quality for gradients and photos saved as PNG.

  • Smallest fileFewest colours. Great for flat graphics, icons and simple screenshots.Icons · flat art
  • BalancedDefaultSmaller and still looks the same for most screenshots and logos.Screenshots · logos
  • Best qualityKeeps more colours, for gradients and photos saved as PNG.Gradients · photos

How the PNG gets smaller

A PNG can hold millions of colours, but most screenshots, logos and diagrams use far fewer.

Palette

A smaller set of colours

The compressor finds a palette that looks the same and saves the image with it, often cutting the file by 60 to 90 percent.

Transparency

Transparent stays transparent

Soft edges and shadows keep their transparency, so a logo still sits cleanly on any background.

Formats
PNG
Size in pixels
Unchanged
Files
Up to 20 images, 1 GB each
Output
PNG

A photo saved as PNG?

Photos are much smaller as JPG or WebP:

More free image tools

Frequently asked questions

Common questions about compressing PNG images with RunConvert.

Yes, free and without a watermark or sign-up.

Yes, including soft edges and shadows.

Balanced and Best quality look the same for screenshots and graphics. Smallest file can show banding in smooth gradients.

No. Width and height stay the same.

Up to 20 images at a time, up to 1 GB each.

They are encrypted in transit, used only for your compression, and deleted automatically after a few hours.

Ready to compress your PNGs?

Free, no sign-up, no watermark.

Compress now

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Add to Preferred Sources