PNG Optimizer
Crush PNG file size without visible quality loss. Reduce colors and strip metadata.
Drop a PNG here or click to browse
Supports PNG images
Frequently Asked Questions
How does PNG optimization work?
PNGs can contain redundant metadata, unnecessary color depth, and inefficient encoding. This tool re-encodes the image with optimal settings and strips non-essential chunks.
What does reducing colors do?
PNG supports palette-based encoding with fewer colors. Reducing from millions to 256 or 128 colors can dramatically shrink file size for graphics, icons, and illustrations — but may affect photos.
Is this truly lossless?
With "Original" color mode and no color reduction, the re-encoding is visually lossless. Color reduction is lossy — use it for graphics, not photographs.
What metadata gets stripped?
EXIF data, text chunks (author, description, comments), timestamps, and color profile metadata. Pixel data is preserved.