Drop a file here or click to choose
Your file stays on your device. Processing happens locally in your browser.
What is Trim Video?
Trim Video is a free online video cutter that keeps only the part you need. Set a start time and duration in seconds and download the shorter clip — no editing software required. It runs entirely in your browser, so your video is never uploaded.
Trim videos online by start and duration and keep your original format — free video cutter on Fah Swe Tools. Processing runs locally in your browser with WebAssembly, so your video never leaves your device.
Key features
- Cut by start time and duration
- Keeps your format: MP4, MOV, WebM or MKV
- Lossless stream copy when possible, exact re-encode otherwise
- Runs in your browser — free, no watermark, nothing uploaded
Popular uses
- Shorten clips for Reels, Shorts and Status
- Remove the beginning or end of a recording
- Extract a highlight from a longer video
Supported formats
Input: MP4, M4V, MOV, WebM, MKV. Output: the same container as the input (M4V and other inputs become MP4).
Troubleshooting
- “The start time is past the end of this file.” Use a start time smaller than the video length shown after you choose the file.
- The cut took longer than expected. A lossless cut could not start exactly on your time, so the clip was re-encoded on your device for precision.
- The clip is a little shorter than requested. If you ask for more seconds than remain after the start, the clip ends at the video's end.
Also known as: Video Cutter, Cut Video Online, Clip Trimmer.
How it works
- Choose a video (MP4, MOV, WebM or MKV) — it stays on your device.
- Set the start and duration in seconds, then click Run.
- Download the trimmed clip in the same format.
FAQ
Accuracy?
A lossless stream copy is used when it can start exactly at your start time; otherwise the clip is re-encoded on your device for an exact cut.
Is my video uploaded?
No. Trim Video runs entirely in your browser with WebAssembly. Your file never leaves your device and is never sent to Fah Swe servers.
How do I cut a part of a video?
Choose it, enter the start second and how many seconds to keep, then download the trimmed clip.
Is trimming frame-accurate?
Yes. Each clip's length is checked; if a lossless cut can't start exactly at your start time, the clip is re-encoded on your device for an exact cut.