Video Trimmer
Cut a video to a start and end time in your browser and keep the good part. Free, private, no signup or upload.
About the Video Trimmer
This free video trimmer keeps just the section you want — set a start and end time and everything outside it is removed. Use it to cut dead air from the start, grab a highlight, shorten a clip for social media, or split a long recording down to the key moment.
Trimming runs entirely in your browser through FFmpeg WebAssembly, so your video is never uploaded. The engine (about 30 MB) is fetched from a CDN on first use and cached, so the first trim is slower than later ones. The trimmed section is re-encoded so the cut lands exactly where you set it, and the output is a widely-compatible H.264 MP4.
Times are entered in seconds. Leaving the end time blank trims to the end of the video. Videos up to 100 MB are supported.
How to Use the Video Trimmer
- 1Choose a video file, up to 100 MB.
- 2Enter the start time in seconds, and an end time (or leave it blank for the end).
- 3Click Trim Video and wait for the progress bar.
- 4Preview the trimmed clip and download it.
Frequently Asked Questions
Is my file uploaded to a server?
No. All processing runs in your browser using FFmpeg compiled to WebAssembly. Your file never leaves your device — only the converter engine is downloaded, once.
Why is the first run slow?
The first time you use any converter here, the browser downloads the FFmpeg core (about 30 MB) from a CDN and compiles it. It is then cached for the session, so later runs are much faster.
How do I choose the section to keep?
Enter times in seconds — for example 5 to 20 keeps the video from 5 to 20 seconds. Leave the end blank to keep everything from the start time onward.
Is the cut frame-accurate?
Yes. The kept section is re-encoded, so the trim lands exactly at the times you set rather than snapping to the nearest keyframe.
Is there a file size limit?
Yes, 100 MB per file. Because everything runs in your browser's memory, very large files can be slow or run out of memory. Trim long clips first if you hit the limit.