Trim Video

Trim Video features

• 01

  Fast stream-copy trimming

  Cuts are made by copying the video stream without re-encoding, so even large files are trimmed in seconds rather than minutes. Quality is identical to the source.

• 02

  Works in your browser

  Powered by FFmpeg compiled to WebAssembly, the tool runs entirely on your device. No file is ever sent to a server — your video stays private throughout.

• 03

  Instant preview

  Watch your original and the trimmed result side by side without leaving the page. Download the output as an MP4, MOV, or WebM file with one click.

Trim Video FAQ

How do I trim a video online?

Drop your video file into the tool, set the start and end times using the sliders, then click Trim. Once processing finishes, preview the result and click Download to save it.

What video formats are supported?

The trimmer accepts MP4, MOV, and WebM files up to 1 GB. The output format matches the input — trimming an MP4 produces an MP4.

Is the video uploaded to a server?

No. Trimming is done entirely in your browser using WebAssembly. Your video file never leaves your device, so there are no privacy concerns.

Why is the cut slightly off from where I set it?

The tool uses stream-copy mode (no re-encode) for speed, so cuts snap to the nearest keyframe in the video. For most content this is within 1–2 seconds of the selected time. For frame-exact cuts, a desktop editor like DaVinci Resolve or iMovie gives more precision.

How large a file can I trim?

The maximum supported file size is 1 GB. For files larger than 1 GB, consider splitting them with a desktop tool first.