Quantize PNG Colors Online
Reduce PNG color palette for dramatically smaller files. Free online color quantization tool — no signup required.
Drop your images here
Supports HEIC, JPG, PNG, WebP, AVIF, TIFF, GIF · Up to 50 files · 50MB max
Settings
Fewer colors means smaller files but more visible color banding
Files
Input (0)0.0 KB
What This Tool Does
Optimize PNG file sizes by reducing palette depth. Most PNG graphics contain far more color definitions than required for clean rendering. In benchmark testing on web graphics and logos, quantizing to 256, 128, or fewer colors typically yields 50% to 80% file size savings while preserving visual appearance. Exact savings depend on color gradients and complexity in the source image.
How to Use
- 1Open theimgapp.com/tools/quantize in any browser
- 2Upload your images by dragging and dropping or clicking to browse
- 3Adjust the settings as needed
- 4Download your processed images individually or as a ZIP file
Privacy First — Zero File Storage
Your images are processed securely with zero persistent storage. Files are handled statelessly in memory and discarded immediately after processing. No database, no tracking, no retention.
Frequently Asked Questions
Will quantizing affect image quality?
For photographs with complex gradients, some banding may be visible. For graphics, icons, and illustrations, results are typically indistinguishable from the original.