Free Online Image Compressor
Reduce image file sizes by adjusting quality, converting to modern formats like WebP, and resizing dimensions. All processing happens locally in your browser using HTML5 Canvas. Choose between WebP (best compression), JPEG (wide compatibility), or PNG (lossless).
How to Use
- Upload an image by clicking or dragging
- Choose output format and quality level
- Set max width for resizing
- Compare original and compressed sizes
- Download the compressed image
Format Guide
- WebP: 25-35% smaller than JPEG, modern browser support
- JPEG: Best compatibility, adjustable quality
- PNG: Lossless, best for screenshots and graphics with text
Privacy
All image processing happens locally in your browser. Images are never uploaded.
Last reviewed: July 2026.