Optimize / Compress Images
Batch-compress JPG, PNG and WebP images locally in your browser. Compare original and optimized sizes before downloading.
Drop images here
or choose files above. Processing stays on this device.
or choose files above. Processing stays on this device.
Results
No optimized images yet.
How it works
Lossy JPG/WebP quality can reduce file size substantially. PNG export is lossless in the browser and may not always become smaller; MesraTools reports the actual result instead of claiming a saving. Resizing can provide additional savings. Canvas re-encoding commonly omits source metadata, but MesraTools does not claim removal of metadata it cannot verify.