Video converter and trimmer — free, in your browser

Bottom Line Up Front (BLUF): This tool converts, compresses and trims video and audio entirely on your device: the file is never uploaded to our server and no tokens are charged.

What the converter can do

Video can be saved as MP4, WebM, MOV, MKV or GIF, and audio as MP3, M4A, WAV or OGG. You can compress (resolution from source down to 360p and three quality levels), trim start and end, mute the audio track and see the approximate result size before you start.

Progress is shown while it works, and the finished file downloads with one button.

Everything runs on your device

Processing is done by ffmpeg compiled to WebAssembly: the file goes into the browser virtual file system rather than our server — no request carrying it is sent. There is no paid API and no tokens are charged.

Video is re-encoded, so each pass loses a little detail — that is normal for compression. Long videos take longer on a phone.

Frequently asked questions

Is the conversion free?

Yes, no tokens are charged: the tool runs in the browser with no paid API.

Is my file uploaded to your server?

No. The file is processed locally and never reaches our server.

Which formats are supported?

Video: MP4, WebM, MOV, MKV, GIF. Audio: MP3, M4A, WAV, OGG. Other common input formats are accepted too.

Does it work on a phone?

Yes, though long videos take noticeably longer on a phone.