Stax
Tools

Video Trimmer — Cut Video Online Free, No Upload

Cut any video by start and end time in your browser — instant lossless trim or frame-accurate mode. No upload, no watermark, no length limits.

Drop a file here or click to browseMP4, MOV, WebM, AVI, MKV — one file at a time🔒 Processed on your device — never uploaded

Seconds (90) or MM:SS / HH:MM:SS

Where the clip should stop

Fast is instant; Precise takes longer but cuts on the exact frame.

Cut a clip out of any video — right in the browser

Most video trimming jobs are tiny: thirty seconds for a WhatsApp status, the two usable minutes of a lecture recording, a highlight from a match. Opening a full editor for that is overkill, and uploading personal footage to a "free online trimmer" is worse. This tool cuts by timestamps using FFmpeg running locally in your browser — pick the start, pick the end, download the clip.

Lossless trimming, explained honestly

Fast mode uses stream copy: the selected span of video data is copied into a new file untouched, which is why it finishes in seconds even for large files and why the quality is identical to the source. The one catch is keyframes — video can only be cut cleanly where a full frame was stored, so Fast cuts land on the nearest keyframe, typically within a second or two. When the exact frame matters, Precise mode re-encodes the clip and cuts to the frame.

The trim-first workflow saves everything downstream

Trimming before any other operation is the single best optimization in video handling: a 30-second clip compresses in seconds, converts instantly, and makes a small GIF. Cut first here, then hand the result to the compressor, the converter, or the GIF maker — the whole chain runs on the same in-browser engine with no uploads at any step.

No length limits, no watermarks

Because your own device does the work, there's nothing to ration: trim an hour-long recording or a five-second clip, as many times as you like, with no watermark stamped on the result and no account demanded before download. The practical limit is browser memory — very large files (500 MB+) depend on your device's RAM.

Frequently asked questions

What's the difference between Fast and Precise mode?
Fast mode copies the video stream without re-encoding — it finishes in seconds with zero quality loss, but cuts snap to the nearest keyframe (typically within 1–2 seconds of your chosen time). Precise mode re-encodes, which takes longer but cuts on the exact frame you asked for.
Is my video uploaded while trimming?
No. The trim runs on FFmpeg compiled to WebAssembly in your own browser tab. The engine downloads once; your video is opened, cut, and saved locally. Nothing is transmitted, stored, or watermarked.
How do I enter start and end times?
Plain seconds (90), minutes and seconds (1:30), or hours (0:01:30) all work, with optional decimals like 1:30.5. The clip runs from the start time to the end time — for a highlight from 2:10 to 2:45, enter exactly that.
Does trimming reduce video quality?
In Fast mode, no — the video data is copied bit-for-bit, so the output is identical quality to the source. Precise mode re-encodes at CRF 23 (H.264), a visually transparent setting for almost all footage.
Can I trim a video for WhatsApp status or Instagram?
Yes — that's the most common use. Cut the segment here (WhatsApp status caps at 30 seconds), and if the file is still too large, run it through the video compressor afterwards. Both steps stay on your device.

Related tools