Convert & compress video to MP4 online — free
Re-encode almost any video to a clean, widely-compatible MP4, or compress a large MP4 to a smaller size. Choose the quality and resolution and process it in your browser.
How to convert or compress a video to MP4
- Drop your video file into the upload box, or click to browse. Everything stays on your device.
- Choose the quality and resolution, then re-encode to a widely-compatible MP4.
- Click Process — everything runs instantly in your browser, with nothing uploaded.
- Preview the result and download it — or send it straight to another JustGIF tool to keep editing.
Features
- Re-encode to universally compatible MP4
- Compress to shrink large files
- Runs locally in your browser — your files never leave your device
- 100% free: no sign-up, no watermark, no file-count limit
- Works on any device — Windows, Mac, Linux, Android and iPhone
Frequently asked questions
Will this make my video smaller?
Yes — lowering the resolution or quality reduces the file size significantly.
Is Video to MP4 free to use?
Yes. Video to MP4 is completely free with no account, no watermark, and no limit on how many files you can process.
Do my files get uploaded to a server?
No. JustGIF processes everything locally in your browser, so your files stay private on your device and nothing is uploaded.
Does it work on my phone?
Yes — JustGIF runs in any modern browser, including Chrome and Safari on phones and tablets, with no app to install.