Your files stay on your device
Brotli compress and decompress
Compress a file to .br or open a .br file.
Drop a file hereNothing is uploaded
Brotli has no magic signature: a truncated or non-brotli file is rejected by the decoder itself, and the message says exactly that. One stream per file: names and containers are gzip/zip territory, not brotli's.
Drop a file hereNothing is uploaded
Higher quality compresses smaller and runs slower (11 is glacial on large files). The wasm encoder runs in the archive worker; the page never blocks on it.