Compress PNG images

PNG is the go-to format for screenshots, logos, icons and anything with sharp edges or transparency. Because it's lossless, this compressor doesn't touch your pixels — it re-packs the file with maximum compression so the image is byte-for-byte identical but smaller. Transparency (the alpha channel) is preserved exactly. Everything runs in your browser, so your graphics never leave your device, and there's no watermark on the result.

1. Drop your PNGs

   Add one or many PNG files.

2. We optimize

   Maximum compression is applied automatically, keeping every pixel.

3. Download

   Save the smaller PNGs individually or as a zip.

• Pixel-perfect

  Lossless re-packing means the image looks exactly the same — only the encoding gets leaner.

• Transparency kept

  The alpha channel is preserved, so logos and overlays stay clean.

• Great for screenshots

  Flat UI graphics and text shrink well without any blur.

• Private and free

  Optimization runs locally — no upload, no sign-up, no watermark.

• Compress JPG

  Better suited to photographs than PNG.

• Compress WebP

  A modern format that often beats PNG on size.

• Image converter

  Convert PNG to WebP or AVIF for even smaller files.