Why Tools Ku
- 100% free, no signup
- ffmpeg.wasm local
- No server upload
- H.264/AAC friendly
MP4 is the lingua franca for sharing and editors. Transcode locally—keep the tab open.
Try Compress or Trim next.
Steps
- Upload video
- Confirm MP4 output
- Transcode and wait
- Download MP4
FAQ
- Uploaded?
- No—ffmpeg.wasm runs locally.
- Slow?
- CPU-heavy—normal for long clips.
- Input formats?
- Common containers per ffmpeg build.
- Quality loss?
- Re-encode may lose quality.
- Mobile?
- Desktop Chrome recommended.
- Signup?
- No.