Image Compressor
Optimize Images Without Quality Loss

Image compression reduces file size by removing redundant data or simplifying image details. This tool uses the HTML5 Canvas API to re-encode images at your specified quality level, balancing file size and visual quality. All processing happens locally in your browser.

No! All image processing happens 100% client-side in your browser using JavaScript and the Canvas API. Your images never leave your device, making this tool safe for sensitive photos and completely private. The tool works fully offline once the page is loaded.

For web use, 80-85% quality provides excellent visual results with significant file size reduction. For photos where quality is critical, use 90-95%. For thumbnails or previews, 60-70% is often sufficient. Always preview the compressed image to ensure it meets your needs.

Use JPEG for photos and complex images with many colors. Use PNG for images requiring transparency or sharp edges like logos and graphics. Use WebP for modern websites as it offers the best compression while maintaining quality, though browser support is near-universal now but not 100%.

Yes! When compressing PNG images and keeping the output format as PNG, transparency is preserved. However, if you convert a PNG to JPEG, transparency will be replaced with a solid background color since JPEG does not support transparency.

Downsizing images (making them smaller) typically maintains good visual quality and significantly reduces file size. Upsizing images (making them larger) will result in quality loss and pixelation. For best results, start with the largest original image and resize down to your target dimensions.

The tool supports images up to 50MB. Since all processing happens in your browser, very large images may take longer to process depending on your device's performance. For batch compression of many large images, consider processing them one at a time.

Yes. When images are processed through the Canvas API, EXIF metadata (including GPS location, camera settings, and timestamps) is removed from the output file. This enhances privacy but also means you'll lose this information if you need it.

Yes! This tool simply compresses your existing images - you retain all ownership and rights to your images. The compression process does not alter licensing or usage rights. Use the compressed images anywhere you could use the originals.

Typical compression results vary by image type. Photos often compress 50-70% at quality 85%. Screenshots and graphics may compress 70-90%. Results depend on the original image format, content complexity, and target quality. Use the live preview to find the optimal balance for your needs.