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ConvertBox

Trim Video

Trim and cut MP4, MOV, and other video files to any segment online for free. Set precise start and end times, preview in browser, and download instantly.

How to Use

  1. Select the video file to trim
  2. Set the start and end times
  3. Click "Trim Video" button
  4. The trimmed video will be downloaded automatically
  5. Verify the output file in your device's download folder.
  6. You can adjust settings and process new files immediately without any restrictions.

All processing is done in your browser, and files are never sent to a server.

Frequently Asked Questions

Yes, you can play the video and set start/end times precisely before trimming.
The trimming process preserves the original video quality.
There is no strict minimum, but very short clips (under 1 second) may not produce reliable results.
If trimming fails: (1) use a file under 500MB, (2) verify the start and end times are within the actual video duration, (3) convert the video to MP4 first for best compatibility, (4) refresh the page and retry.
No. All operations are processed entirely inside your browser's local sandbox using client-side APIs (like WebAssembly, pdf-lib, or HTML5 Canvas). Your files and data never leave your device.
The tool is completely free with no usage limits. However, since processing occurs in your browser's memory, we recommend keeping file sizes under 50MB (especially for heavy files like PDFs or videos) to ensure stability.
No. All tools on ConvertBox are 100% free. We do not insert watermarks, limit features, or require any registration or payment.
Yes. Once the page and its local library dependencies are loaded in your browser, the conversion logic runs completely offline without needing an active internet connection.

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