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Shrink your PNG images without the bloat

Drop up to 20 images here. Smart color-count reduction brings the file size down — everything happens inside your browser, nothing is uploaded.

Drop your images here

or click to choose from your device — PNG only, 20 files max

Choosing a color count

Color count Best for Approx. size reduction
200–256 Detailed images with lots of gradients 10–30%
64–199 Product photos, screenshots, web banners 40–60%
16–63 Icons, logos, simple graphics 60–80%
Below 16 Flat graphics with a limited palette 80%+

Compress PNG Images Online for Free

Our online PNG compressor reduces the file size of your PNG images using color quantization, without losing transparency or visual quality. This tool runs entirely in your browser, meaning your files are never uploaded to a server. PNG files are typically larger than JPEGs, so compressing them can have a major impact on your website's loading speed.

Why PNG shrinks less than JPEG

PNG is a "lossless" format — no pixel is ever discarded, unlike JPEG which sacrifices some data by design. That means a pure PNG optimization pass usually only saves 10–40%. For a bigger drop, this tool uses a different lever: reducing how many colors the image uses.

How color reduction works

Most web images (product shots and icons especially) don't need millions of colors. This tool reduces the image down to however many colors you pick (say, 128 or 64) and uses dithering to hide most of the resulting quality loss — the same technique tools like TinyPNG use.

When it's not a great fit

For images with subtle gradients or a very wide color range (professional photography, for instance), color reduction can become visible. In those cases, pick a higher number (closer to 256) or check the result before downloading.

    How to use it

  1. Add images — drag and drop your PNGs, or select them from your device.
  2. Compress — click "Compress all" to process every file at the default setting.
  3. Fine-tune (optional) — adjust a photo's color-count slider and click "Apply".
  4. Download — save an image on its own, or grab everything at once as a zip.

Frequently Asked Questions

Does compressing a PNG remove transparency?

No. This tool preserves the alpha (transparency) channel of your image and only optimizes the number of colors used to reduce file size.

What's the difference between PNG and JPEG compression?

PNG is typically used for images with transparency or sharp edges (like logos and icons), while JPEG suits photographs better. PNG compression here works by reducing color count rather than discarding detail, unlike JPEG.

Are my images uploaded to a server?

No. All processing happens directly in your browser, and no files are ever sent to a server.

What is the maximum file size I can compress?

You can upload PNG images up to 125MB

Is this tool free to use?

Yes, this PNG compressor is completely free to use, with no sign-up required.