Is this video trimmer free?

Yes, completely free with no watermark, no signup, and no file size limits.

Are my videos uploaded to a server?

No. All trimming happens locally in your browser. Your videos never leave your device — 100% private.

What is the difference between Fast and Precise trim?

Fast trim copies the video data without re-encoding — it is instant but may start a few frames before your selected point. Precise trim re-encodes for frame-accurate cuts but takes longer.

What video formats are supported?

MP4, WebM, AVI, MOV, MKV and most common video formats. Output is MP4.

Is there a file size limit?

No hard limit. Your device memory is the only constraint. Most devices handle videos up to 500MB-1GB.

Can I trim multiple segments?

Currently you can trim one segment per operation. For multiple cuts, trim your video multiple times.

Video Trimmer Online

Trim and cut videos directly in your browser. Use the visual timeline with draggable handles to select the exact segment you want, then export with fast copy mode or precise re-encoding. No upload to any server, no watermark, no signup — completely private.

Drop your video here

or browse to select

MP4, WebM, AVI, MOV, MKV supported

Trim Selection

00:00.0 Duration: 0.0s 00:00.0

Start Time (MM:SS.ms)

End Time (MM:SS.ms)

Selection Duration

Trim Mode

Fast Trim (Copy)

No re-encoding. Instant but may start a few frames before the selected point due to keyframe alignment.

Precise Trim (Re-encode)

Frame-accurate cuts. Slower processing but exact start and end points. Output is H.264 + AAC.

Loading FFmpeg...

Trimmed Video Ready

How the Online Video Trimmer Works

This browser-based video trimmer uses FFmpeg.wasm, a WebAssembly port of the industry-standard FFmpeg multimedia framework, to process videos entirely on your device. When you upload a video, it stays in your browser memory and is never sent to any server. The visual timeline displays the full video duration with draggable handles that let you select the exact start and end points of the segment you want to keep. You can drag the handles, type precise times manually, or click the timeline to seek and preview your selection before trimming. The tool supports all common video formats including MP4, WebM, AVI, MOV, and MKV, with output always in the widely compatible MP4 format using H.264 video and AAC audio codecs.

Fast Trim vs Precise Trim

The tool offers two trimming modes to balance speed and accuracy. Fast trim uses stream copy mode, which extracts the selected segment without re-encoding. This is nearly instant regardless of file size because it simply copies the compressed data between the nearest keyframes. The tradeoff is that the actual start point may be a few frames before your selection, since video compression groups frames together in keyframe intervals typically every 2 to 10 seconds. Precise trim re-encodes the video using H.264 with CRF 18 quality and AAC audio at 192 kbps, producing frame-accurate cuts at your exact selected timestamps. This takes longer but is ideal when you need clean transitions or are preparing clips for editing software.

Video Trimming for Content Creators

Content creators frequently need to extract specific segments from longer recordings for social media clips, highlight reels, or podcast excerpts. This trimmer eliminates the need for heavy desktop editing software for simple cut operations. Since everything runs locally, you can safely trim client footage, unreleased content, or private recordings without worrying about cloud storage policies or data breaches. The visual timeline makes it easy to identify the right moments, and the preview function lets you verify your selection before committing to the trim operation. For creators working on mobile or Chromebooks without access to traditional editing software, this tool provides professional-quality trimming capability directly in the browser.

Privacy and Technical Details

All video processing happens through WebAssembly in your browser tab. FFmpeg.wasm is loaded from a CDN on first use and cached for subsequent visits. Your video file is read into browser memory, processed by the FFmpeg engine locally, and the trimmed output is generated as a downloadable file — all without any network transfer of your video data. The tool works offline after the initial FFmpeg load. Device memory is the only practical limit; most modern devices handle videos up to 500 MB to 1 GB comfortably. For larger files, ensure your device has sufficient available RAM. The trimmed video maintains the original quality in fast mode and near-original quality at CRF 18 in precise mode, which is visually lossless for most content.