Image Compressor

The compressor uses the HTML5 Canvas API to re-encode your images directly in your browser. When you upload an image, it is drawn onto a canvas element and then exported in your chosen format and quality level. This process reduces file size by discarding unnecessary metadata and applying lossy or lossless compression, all without uploading anything to a server.

Yes, completely. All compression happens locally in your browser using client-side JavaScript. Your images are never uploaded to any server, never stored, and never seen by anyone else. Once you close or refresh the page, the compressed data is cleared from memory.

For most use cases, a quality setting of 70-80% offers the best balance between file size reduction and visual quality. Photos for the web work well at 75%. If you need near-lossless quality, use 90-95%. For maximum file size reduction where some quality loss is acceptable, try 50-60%.

JPEG is best for photographs and images with gradients. It offers excellent compression ratios. PNG is ideal for images with transparency, text, or sharp edges like logos and screenshots. WebP provides the best overall compression (up to 30% smaller than JPEG) and supports both lossy and lossless modes, but has slightly less universal browser support.

Yes, the tool supports batch compression of up to 10 images simultaneously. Simply drag and drop multiple files or select them using the file picker. Each image is compressed individually with the same quality and format settings, and you can download them all at once.