Trim videos instantly

Cut any part of an MP4, WebM, or MOV file right in your browser. No upload, no account, no waiting.

Your video never leaves your browser — 100% private, 100% local
🎬

Drop a video file here

MP4 · WebM · MOV · AVI · up to ~2GB

Your video never leaves your browser — processed 100% locally

Initializing…

First run downloads FFmpeg (~10MB, one-time). Subsequent trims are instant.

Trim complete!
Your video has been trimmed successfully.
Download trimmed video

How to trim a video

  1. 1

    Upload your video. Drag and drop or browse for an MP4, WebM, or MOV file. The video loads entirely in your browser.

  2. 2

    Set trim points. Use the start and end sliders to select exactly which part of the video to keep. Preview in real time.

  3. 3

    Trim and download. Click Trim Video. FFmpeg processes everything locally in your browser, then downloads your trimmed file in seconds.

Frequently asked questions

Is my video uploaded to a server?

No. The Video Trimmer uses FFmpeg.wasm — a version of FFmpeg compiled to WebAssembly that runs entirely in your browser. Your video never leaves your device.

What video formats can I trim?

MP4, WebM, MOV, and AVI. Most modern video files work. The tool uses stream copy mode (no re-encoding) for fast processing.

Why does the first trim take longer?

The first time you trim a video, the tool downloads FFmpeg.wasm (~10MB) from the CDN. This is a one-time download per browser session. Subsequent trims are much faster.

Can I trim large video files?

Yes. Because processing happens in your browser's memory, very large files (over 2GB) may be slow or cause issues on devices with limited RAM. For files over 500MB, a desktop browser is recommended.

What output formats are available?

MP4 (H.264) and WebM. MP4 has the widest compatibility. WebM is better for web use and produces slightly smaller files.