Free Image Compressor — PNG Quantization

Reduce PNG file size by up to 80% with smart color reduction. For JPG/WebP: adjust quality. All in your browser – no upload, no login.

Click or drag & drop images here

JPG, PNG, WebP · Max 20MB each
75%

Select images above to get started

Why use PNG color reduction?

Up to 80% smaller

PNGs with many colors (screenshots, logos, icons) can be reduced to 2‑256 colors – often visually identical but much smaller.

Private

All compression happens in your browser. No uploads, no servers.

Perfect for web

Icons, logos, screenshots, and illustrations become tiny while keeping transparency.

What is PNG quantization?
It reduces the number of unique colors in a PNG from millions down to 2‑256. This drastically shrinks file size while often keeping the same visual quality for graphics, logos and screenshots. Photographs are better compressed as JPG or WebP.
Does the tool preserve transparency?
Yes, PNG transparency (alpha channel) is fully preserved during color reduction.
Is my image uploaded?
No. Everything runs locally in your browser. Your images never leave your device.

Related tools

JPG to WebPJPG to PNGAI Detector