How WebAssembly Powers Free Browser Tools With No Login

There's a reason Squoosh can compress your images using codecs that rival desktop apps — and it has nothing to do with server power. The compression happens entirely in your browser tab, using a technology called WebAssembly. No upload required, no account needed, no waiting for a remote server to process your file and send it back. This changes what "free browser tool" means. A lot of them. What WebAssembly Actually Is WebAssembly (shortened to Wasm) is a binary instruction format that runs in