Running everything locally is a design constraint that shapes the whole product, not a marketing line.
Workers keep the page responsive
Heavy encoders run in a background worker so the interface never freezes while a large file is processed.
A strict security policy
- No eval, so injected scripts cannot run.
- Libraries load only when a tool needs them.
- Network access is limited to what the page requires.
Try the tools
Try it yourself
Everything in this guide runs in your browser. Free, with nothing uploaded.
Open Compress video
