Does Video Trimmer cost anything or require an account?

No. Video Trimmer is completely free with no usage caps, subscriptions, or sign-up forms — supported by unobtrusive ads, and usable for personal and commercial work alike.

Can I use Video Trimmer on a phone or offline?

Yes. The layout adapts to phones and tablets, and because the logic ships as static client-side code, Video Trimmer keeps working on intermittent connections once the page has loaded.

How does Video Trimmer work without uploading my data?

Video Trimmer runs entirely inside your browser's sandbox: the page loads once, and every operation after that executes on your own device's CPU. No input, file, or result is transmitted to any server — you can even watch the network tab stay silent while you use it.

Video Trimmer

Q: What exactly does Video Trimmer do?

Cut video clips by start and end time Trim the start and end of a video without re-encoding when possible, keeping quality lossless and processing instant. Runs locally with FFmpeg WebAssembly.

Cut video clips by start and end time

Free Private No uploads

Trim video

Drop a file to processProcessed by FFmpeg compiled to WebAssembly — entirely on your device

Start (seconds)

End (seconds)

Mode

Fast mode copies the stream without re-encoding — instant and lossless, but the cut points snap to keyframes (up to ~2s off). Precise mode re-encodes for exact frame boundaries.

100% Private & In-Browser

Processed locally using client-side JavaScript. Your files and data never touch any server.

Instant & Unlimited

No registration, no waiting queues, and no limits on file conversions or generations.

Tool Overview & Guide

What is Video Trimmer?

Trim the start and end of a video without re-encoding when possible, keeping quality lossless and processing instant. Runs locally with FFmpeg WebAssembly.

Step-by-Step Instructions

How to use Video Trimmer

Open Video Trimmer in any modern web browser on your computer, tablet, or smartphone.

Select, drag, or drop your file directly into the Video Trimmer workspace.

The tool processes your data in real time directly on your device using WebAssembly-compiled FFmpeg cores and browser WebCodecs hardware APIs.

Copy your generated result to your clipboard, preview the output, or save your file with a single click.

Key Capabilities

Cross-Platform Compatibility — works the same across Windows, macOS, Linux, iOS, and Android.
No Account, No Email, No Watermarks — open the page and start working immediately.
Real Media Decoding — a WebAssembly FFmpeg core processes your audio and video on your own CPU.
Cut video clips by start and end time

Common Use Cases

Running a quick one-off task — once loaded, most tools keep working even if the connection drops.
Trim the start and end of a video without re-encoding when possible, keeping quality lossless and processing instant. Runs locally with FFmpeg WebAssembly.
Content creators, podcasters, video editors, and audio engineers who need to demux and extract audio/video streams directly on local CPU cores without installing software.
Handling private or confidential material that should not be uploaded to third-party cloud services.

Clear Answers

Frequently Asked Questions

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