Compress PNG Online — Free PNG Optimizer
Reduce PNG file sizes without losing quality. Convert to WebP for even smaller files. Free, private, runs in your browser.
PNG files are lossless but can be surprisingly large. This optimizer reduces PNG file sizes while preserving every pixel of quality. For even smaller files, convert to WebP format which typically achieves 30% better compression than PNG.
Drop images to compress
PNG, JPG, WebP • Max 50MB each
How It Works
This compressor uses your browser's native Canvas API and intelligent quality reduction algorithms to minimize image file size while preserving visual quality. Drop your images, adjust the quality slider, and see the compressed result with a side-by-side comparison.
The tool re-encodes images at your chosen quality level, stripping unnecessary metadata (EXIF, ICC profiles) and optimizing the encoding. You see the exact file size savings and visual difference before downloading.
Features
- ✓Adjustable quality slider with real-time size preview
- ✓Side-by-side comparison: original vs. compressed
- ✓Batch processing — compress multiple images at once
- ✓Supports PNG, JPG, WebP input formats
- ✓Shows exact file size reduction percentage
- ✓Preserves image dimensions and aspect ratio