How to use it
- Drop your video onto the page.
- Drag the sliders or type the start and end times.
- Play the selection to check it.
- Choose Precise or Fast and click Trim video.
Set the start and end
The video opens in a preview player. Set the clip in whichever way is easiest:
- Drag the Start and End sliders; the preview jumps to each point.
- Type times as minutes:seconds, such as
1:23.5, or plain seconds like83.5. Longer videos accept hours, like1:02:03. - Pause the player at the right moment and click Set start here or Set end here.
Click Play selection to watch just the part you chose before you cut it. The length of the selection is shown next to the full video's length.
Precise or fast?
| Precise | Fast (no re-encoding) | |
|---|---|---|
| Cut accuracy | Exactly at your start time | Starts at the nearest keyframe before your start |
| Quality | Re-encodes only if needed | Identical to the original |
| Speed | Seconds to minutes | Seconds |
Videos are compressed in groups of frames that start with a keyframe; the frames in between only store changes. A cut that copies the video untouched can therefore only start on a keyframe, which can be up to a second or two before the point you picked. Fast mode does exactly that: it's lossless and nearly instant, and great when a little extra lead-in doesn't matter.
Precise mode starts exactly where you asked. If your start time isn't on a keyframe, the video is re-encoded so the first frame is right; otherwise it's copied as in fast mode. The audio is cut along with the video in both modes.
Common uses
- Share only the highlight of a long recording: a goal, a punchline, a key moment from a meeting.
- Cut dead air at the start and end of a screen recording or a phone video.
- Fit a time limit for social posts, video replies or upload forms.
- Make smaller files: removing minutes you don't need saves far more space than heavy compression.
- Prepare a clip for a GIF or a loop.
To cut several parts, trim once and download, then click Another clip from this video and set the next range; the video stays loaded.
Remove the audio
Tick Remove audio to get a silent clip, for example for a background loop on a website or a social post where you'll add music later. To mute a whole video without trimming, use remove audio from video.
Supported files and privacy
You can trim MP4, MOV, M4V, WebM and MKV files, as long as your browser can read the video codec. The result is always an MP4 named after the original with -trimmed added.
Your video is never uploaded: it's read, cut and saved on your own device, which is faster than uploading a big file and keeps private footage private. Very large files depend on your device's memory, and the tool warns you if a file is large. It works in current Chrome and Edge, Safari 16.4 or later and Firefox 130 or later on desktop.
Need a smaller file? Run the clip through the video compressor. Want it as an animation? Try MP4 to GIF.
Frequently asked questions
How do I cut the beginning off a video?
Drop the video, move the Start slider or type the time where the clip should begin, leave End at the end, and click Trim video.
Does trimming reduce quality?
Fast mode never does: the video is copied as is. Precise mode re-encodes only when the start isn't on a keyframe.
Why does my fast-trimmed clip start a bit early?
Fast trimming can only start on a keyframe, which may be one or two seconds before the time you chose. Use Precise mode for an exact start.
Can I trim a MOV or WebM file?
Yes. MP4, MOV, M4V, WebM and MKV work, and the output is MP4.
Is there a length limit?
No fixed limit, but very large files need a lot of memory. A computer handles long videos better than a phone.
Last updated: November 12, 2026