Video Tools
Video Trimmer
Trim and cut video files with precise start/end controls and multiple output formats.
Your files stay on your device - processed locally via WebAssembly, never uploaded
Drop a video file or click to upload
MP4, WebM, MOV
Your videos are processed locally. Nothing is uploaded.
Embed this tool on your website
Copy this code to add the Video Trimmer to your site for free. It runs entirely in your visitors' browsers - no API key, no usage limits.
<iframe src="https://optipix.art/embed/video-trimmer" width="100%" height="600" style="border:1px solid #e4e4e7;border-radius:8px;" title="Video Trimmer by OptiPix" loading="lazy"></iframe> <p style="font-size:12px">Free tool by <a href="https://optipix.art/video-trimmer">OptiPix Video Trimmer</a></p>
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About Video Trimmer
Last updated: June 2026
OptiPix Video Trimmer lets you cut and trim video files directly in your browser. Upload MP4, WebM, MOV, AVI, or MKV files, set precise start and end times, and export the trimmed clip. Supports keep-selection and remove-selection modes. Uses FFmpeg.wasm for processing - copy mode for fast trimming without re-encoding, or re-encode for frame-accurate cuts. Your videos never leave your device.
How It Works
FFmpeg.wasm trims the video using -ss (start) and -to (end) flags. Copy mode (-c copy) is fast but key-frame dependent. Re-encode mode gives frame-accurate cuts.
Use Cases
- •Trim video for social media
- •Cut intro/outro from recordings
- •Extract clips from long videos
- •Trim screen recordings
- •Cut video for email attachment
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If you find Video Trimmer useful, check out these related tools: Video Merger, Video Resizer, and Video Speed Changer. All tools run entirely in your browser with no uploads or signups required.
Explore more: Browse all tools · Step-by-step guides · Tips & tutorials · Compare tools
What is the best free video trimmer without upload?
OptiPix Video Trimmer cuts MP4, WebM, and MOV files using FFmpeg compiled to WebAssembly, so the video is processed on your device instead of being uploaded. Unlike Kapwing or Clideo, there is no watermark, no file-size limit, and no account required.
OptiPix Video Trimmer vs Clideo vs Kapwing vs VEED.io
| Feature | OptiPix | Clideo | Kapwing | VEED.io |
|---|---|---|---|---|
| Video uploaded to a server | Never - trimmed locally | Yes | Yes | Yes |
| Free watermark | None | Watermark on free tier | Watermark/limits free | Watermark on free tier |
| File size limit | Browser memory only | 500MB free | 250MB free | 1GB free |
| Upload/processing wait | None - starts instantly | Upload + queue time | Upload + queue time | Upload + queue time |
| Account required | No | For HD export | Yes | Yes |
Competitor details reflect publicly listed free-tier features and may change.
How browser-local video trimming works
OptiPix runs FFmpeg - the same tool professional pipelines use - compiled to WebAssembly inside your browser tab. Your video file is read directly from disk into the page's memory; no upload, no queue, no server-side render farm, and no watermark because there's no infrastructure cost to recoup.
When you trim without re-encoding, FFmpeg performs a stream copy: it cuts at the nearest keyframes and rewrites container timestamps, finishing a multi-hundred-MB file in seconds with zero quality loss. Frame-accurate cuts between keyframes require re-encoding the affected segment, which the tool handles automatically when needed.
Everything stays in RAM, so the practical ceiling is your device's memory rather than an arbitrary 250MB plan limit. A phone clip, screen recording, or 4K drone shot that fails to upload to cloud editors on hotel Wi-Fi trims locally without transferring a single byte.
Frequently Asked Questions
What formats supported?
Is re-encoding needed?
Is my video uploaded?
Max file size?
Can I trim without quality loss?
How do I trim a video without losing quality?
Why do online video trimmers take so long?
Is it safe to trim private videos online?
How do I trim a video without losing quality?
How can I cut a video online for free without a watermark?
Can I trim a video without uploading it?
How do I cut out the middle of a video?
What is the fastest way to trim a large video file?
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