Compress Image

Image compression is one of the most effective ways to improve website performance, reduce email attachment sizes, and free up storage space. Large, uncompressed images are the leading cause of slow page load times — a problem that hurts both user experience and search engine rankings. By reducing file sizes without a dramatic loss in visual quality, you can serve pages faster, stay within email size limits, and store more photos in the same amount of space.

The quality slider gives you precise control over the trade-off between file size and visual fidelity. At a setting of 1.0, the image is re-encoded with minimal loss. At 0.5, file sizes can drop by 70-80% while still looking sharp on screens. The sweet spot depends on the use case: product photos for an online store benefit from higher quality (0.7-0.8), while thumbnails and social media previews look fine at 0.5-0.6. Experimenting with different settings takes seconds since everything runs locally.

All processing happens entirely in your browser using the Canvas API — your images are never uploaded to any server. As a side effect of re-encoding, EXIF metadata (camera model, GPS coordinates, date taken) is stripped from the output. This is a privacy benefit if you are sharing photos publicly, but something to be aware of if you need that metadata preserved for archival purposes.