Trim MP4
Cut the start and end off an MP4 on a visual timeline, right in your browser. Runs entirely in your browser, so your data never leaves your device.
Drop an MP4 here, or click to browse
Up to 5 GB · trimmed on a visual timeline · never leaves your device
Output
Select a range on the timeline and press Trim video; the clip appears here.
Your videos never leave this tab
Trim MP4 is JavaScript that your browser has already downloaded, and it does the whole job on your own machine. On a normal site, a 5 GB video means 5 GB uploaded, a wait in somebody's queue, and 480 MB downloaded again. Here it means 0 bytes up and 0 bytes down.
- No upload
- No file size limit
- Works offline once loaded
- Nothing stored or logged
How to use Trim MP4
- 1. Upload the MP4 and find your clip. Drop or browse for the .mp4 file. It opens in a player with a filmstrip timeline underneath, so you can scrub through and spot the section you want to keep. Videos up to 5 GB work, and nothing ever leaves your device.
- 2. Drag the handles around the part you want. Pull the left handle to where the clip should start and the right handle to where it should end; the shaded areas are what gets cut away. Fine-tune with the time fields, then press Play selection to preview exactly what you are keeping.
- 3. Pick a trim mode and download the clip. Exact re-encodes the selection so the cut lands on the precise frame you chose. Fast copies the video data without re-encoding, which is instant and lossless but starts at the nearest keyframe. Press Trim video, preview the result, and download it.
When to use Trim MP4
Trim MP4 cuts a video down to just the part you care about, using a visual timeline instead of typing timestamps, entirely in your browser with no upload. Use it whenever the useful part of a recording is buried inside a longer file.
- Pulling one moment out of security footage. A six minute camera clip contains ten relevant seconds; dragging the handles around the incident produces a small clip that is easy to share or archive.
- Cutting dead air off a screen recording. Recordings usually start with window shuffling and end with reaching for the stop button; trimming both ends makes the take look deliberate.
- Shortening a clip to fit a platform limit. A service caps uploads at 60 seconds; selecting the best minute on the timeline gets the video under the limit without external software.
- Splitting a long event into highlights. Run the same recording through the tool several times with different selections to produce a set of short highlight clips from one source file.
Examples
Cut a highlight
Input
match.mp4 (22 min) + selection 04:10 to 04:55
Output
a 45 second clip, picked by dragging the timeline handles
Drop dead footage
Input
screen-recording.mp4 + trim the first 30 seconds of setup
Output
the recording starting right at the action
About the Trim MP4 tool
Trim MP4 is a free online tool that works entirely inside your web browser. Cut the start and end off an MP4 on a visual timeline, right in your browser. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 12 Video utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with the Trim mode setting, and the result refreshes the moment you change it. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. 2 worked examples further down the page show exactly what the tool produces for real inputs.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is Trim MP4 free to use?
Yes, it is completely free. All 2,671 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
Which files does Trim MP4 accept?
It accepts MP4 videos. There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.