Free Image Compressor

The compressor uses your browser's built-in Canvas API to re-encode JPEG and WebP images at a lower quality setting, and OxiPNG (WebAssembly) for lossless PNG optimization. Everything is processed entirely on your device — no data is sent to any server.

No. Everything runs 100% in your browser. Your images never leave your device. This makes the tool completely private and works even offline once the page is loaded.

You can upload JPEG, PNG, and WebP images. For single images, you can choose the output format (JPEG, PNG, or WebP). For batch compression, each image is automatically optimized in its original format.

Both are lossy compression formats, but WebP generally achieves 25-35% smaller file sizes than JPEG at equivalent quality. WebP is supported by all modern browsers. Use JPEG if you need maximum compatibility with older software.

For JPEG and WebP, lossy compression involves a trade-off between file size and quality. At 80% quality, most images look virtually identical to the original while being significantly smaller. PNG compression is fully lossless — the image quality stays identical, only the file encoding is optimized.

Since all processing happens in your browser, there's no upload limit. However, very large images (over 50MP) may be slow to process depending on your device's memory and processing power.

Yes! You can upload up to 10 images at once. They'll be automatically compressed and you can download them individually or all together as a ZIP file.

Results vary depending on the source image. A typical JPEG photo at 80% quality can be reduced by 40-70% with minimal visible quality loss. PNG optimization typically achieves 10-40% reduction while being completely lossless.