Offline image compressor
Compresso works offline once loaded. Install it as a PWA and compress images anywhere — on a plane, in a secure environment, or with no connection.
How it works
- Open Compresso and install when prompted.
- Go offline — the app still works.
- Compress images locally with no network.
Common questions
- Does offline mode upload later?
- No. Compression never involves a server. Offline means fully local.