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Compress PNG

Compress a PNG image by reducing its color palette — great for screenshots, logos and flat-color graphics that need to stay crisp.

Your image is processed in your browser using WebAssembly/JS libraries loaded from a CDN. The image file itself is never sent to PixelFree's servers.
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How It Works

Reduce PNG file size using palette-based compression, ideal for graphics and screenshots. Everything runs the moment you upload an image — there's no queue, no account, and no watermark on your download.

How to Use Compress PNG

  1. Upload your image (drag & drop, tap to browse, or paste from clipboard).
  2. Adjust the settings if needed.
  3. Click the process button.
  4. Compare before and after, then download your result.

Supported Formats

JPG, PNG and WebP are supported. Files up to 30MB are accepted.

Why Use Compress PNG

Compress PNG gets a common image job done in seconds without installing desktop software, creating an account, or waiting on a slow upload queue. Your image is processed in your browser using WebAssembly/JS libraries loaded from a CDN. The image file itself is never sent to PixelFree's servers.

Tips

  • For the smallest file size, start from the highest-quality original you have.
  • If you need an exact pixel size for a form or platform, check the presets on our Image Resizer.
  • Chain tools together — for example, resize first, then compress, for the smallest possible result.

FAQ

Is Compress PNG really free?

Yes. Compress PNG is completely free to use, with no signup, watermark or hidden limits on how many times you can use it.

Is my image uploaded to a server?

Processing happens in your browser using JavaScript and WebAssembly. The image itself is never uploaded to PixelFree's servers — only the third-party library code needed to run the tool is downloaded once from a CDN.

Will compressing reduce quality?

Some quality loss is a normal trade-off of reducing file size. Use the quality or color-palette slider to find the balance that looks right for your use case.

Does this work on mobile?

Yes — every PixelFree tool is built mobile-first and works on iPhone, Android, tablets and desktop browsers.