Compress PNG Images Online — Free & Ad-Free
Lossless image format that supports full alpha transparency. Best for logos, graphics, and images requiring sharp edges. ImageSmith's free PNG compressor reduces file sizes by 60–90% using lossless compression, entirely in your browser. PNG compression is lossless. ImageSmith automatically converts PNG to WebP for up to 50% size reduction while preserving transparency.
✓Lossless compression preserves every pixel perfectly
✓Full alpha channel transparency support
✓Perfect for text overlays, logos, and UI elements
✓Wide compatibility with all modern software
Compress PNG to a Specific Size
Other Format Compressors
When to Use PNG
Use PNG when you need transparency, sharp text edges, or lossless preservation of graphics and illustrations.