JustCompressVideo Desktop
For videos too large for the browser. Fast native compression, no file size limits, no internet required.
Windows SmartScreen Warning
When you first run the app, Windows may show a "Windows protected your PC" warning. This is normal for new apps that aren't code-signed yet — it doesn't mean the app is unsafe.
How to bypass SmartScreen:
- When the blue "Windows protected your PC" dialog appears, click "More info"
- Click "Run anyway" to start the app
- You only need to do this once — Windows remembers your choice
Browser vs Desktop
| Browser | Desktop App | |
|---|---|---|
| File size limit | ~4GB (browser limit) | No limit |
| Internet required | Yes (to load the page) | No |
| Install required | No | Yes (small download) |
| Privacy | 100% local processing | 100% local processing |
| Speed | Slow (browser WASM) | Fast (native ffmpeg) |
Just need a quick compress?
Use the browser tool — no download needed →