Color quantizer is a Windows utility that enables users to process various types of pictures, creating lightweight web content. Moreover, it is possible to tweak the default color mode for accurate printing.

Optimization process

The main purpose of the application is helping you to compress image files while maintaining visual quality. This is done through color quantization algorithms such as:

Median cut;
Octree;
K means clustering.

Users can manually tweak and define custom palettes. Additionally, there are instruments for fine tuning colors to meet specific design requirements. Multiple photos might be processed simultaneously as well, potentially saving a lot of time and effort.

Export settings

An option to preview resulting pictures is provided. You are able to perform side by side comparisons to assess the impact of previous adjustments. Furthermore, there are tools to preserve transparency in files with alpha channels.

Similar to GIF Optimizer, the list of supported output formats includes PNG, JPG, BMP and TIFF. There are flexible compression parameters to help users find the balance between size and quality.

Features

free to download and use;
designed for optimizing digital photos before publishing them online;
you can effortlessly reduce the amount of colors in imported pictures;
supports multiple target file formats to ensure wide compatibility;
compatible with all modern versions of Windows.