Squoosh

Squoosh is a browser-based image compressor from Google Chrome Labs that shows the original and the compressed result side by side, split by a draggable divider. It supports modern codecs such as WebP, AVIF and MozJPEG with adjustable settings, and all processing happens locally, so images never leave your device. It is a quick way for designers and developers to see exactly how far an image can be compressed before quality starts to drop.