Tools · English
Compress MP4 online — free
Drop an MP4, pick a target size, download. Encoding runs in your browser via WebCodecs / ffmpeg.wasm.
Lokalt i din webbläsareFilen lämnar aldrig enhetenInget konto · ingen e‑post0 kr · inga annonserNote: The tool UI is in Swedish — controls are visual (drag, pick, download). File processing is identical.
Krymp's MP4 compressor re-encodes H.264/H.265 video locally — no upload, no account.
Pick a target size, resolution, or quality. Works for screen recordings, phone videos and more.
Private. Files are processed in your browser. Nothing is uploaded.
Free, unlimited. No account, no watermark, no daily caps.
How it works
- 1Drop MP4. Drag the file or click to select.
- 2Pick preset. Choose target size or quality.
- 3Download. Compare before/after and save.
FAQ
- Is upload required?
- No, encoding runs locally.
- Fast?
- Yes, hardware-accelerated via WebCodecs when supported.
- Audio kept?
- Yes, audio is preserved by default.