--- title: "Video Trimmer" description: "Cut and trim videos to specific timestamps online. No upload, no watermark — all processing happens locally in your browser." url: https://findutils.com/media/video-trimmer/ category: media --- # Video Trimmer Cut and trim videos to specific timestamps online. No upload, no watermark — all processing happens locally in your browser. **Use this tool:** [Video Trimmer](https://findutils.com/media/video-trimmer/) ## Programmatic access - Browser-only: this tool works on a file, the DOM, or a browser API and has no REST or MCP id. ## Why use our Video Trimmer? Our video trimmer is the perfect tool for quickly cutting unwanted sections from your videos. Whether you need to remove an intro, trim the ending, or extract a specific clip, our browser-based tool makes it simple and fast. Unlike other online tools, your video never leaves your device. All processing happens locally in your browser: the trimmer reads your file with WebCodecs through the Mediabunny library, and falls back to canvas and the browser's MediaRecorder when the output container differs from the input. On the fast path it copies packets instead of re-encoding, so the trim finishes in seconds with no upload or download wait. The tool supports popular video formats including MP4, WebM, and MKV, and can export to either MP4 or WebM format. The intuitive timeline interface lets you precisely select your trim points with frame-accurate control. ## Video Trimming Tips - Trim at keyframe boundaries when possible. Cutting at a keyframe avoids re-encoding and preserves full quality. If your cut looks glitchy at the start, try shifting the start point by a fraction of a second. - Use the preview feature before processing. Watching the selected segment first saves time, especially on large files where re-trimming would mean waiting through another processing cycle. - Keep your browser tab in the foreground while trimming. Background tabs may get throttled by your operating system, which slows the browser's media processing significantly. - The trimmer accepts files up to 500 MB and rejects anything larger outright. Close other browser tabs when you work near that cap, because the whole video is held in browser memory while it is processed. - Export to WebM if you need a smaller file, or stick with MP4 for maximum compatibility across devices and platforms. MP4 plays natively on virtually every phone, tablet, and computer. ## Frequently Asked Questions ### Does this video trimmer require a signup? No. Our video trimmer is free to use, with no hidden costs, watermarks, or limitations. You can trim as many videos as you want. ### Are my videos uploaded to a server? No, for the video file itself. The trimmer reads it in your browser with WebCodecs through the Mediabunny library and sends it nowhere. The optional From URL box is the one request that leaves: your browser downloads that address directly, so the site you paste sees the request, and the video still goes nowhere else. The page loads ad and analytics scripts as most sites do, and they never see your file. ### What video formats are supported? We support MP4, WebM, MKV, and MOV for input. Output can be saved as MP4 or WebM format. ### Is there a file size limit? Yes. The trimmer accepts files up to 500 MB and rejects anything larger before reading it. The whole video is held in browser memory while it is processed, so close other tabs when you work close to the cap. ### Will trimming reduce video quality? No, not when the containers match. On that fast path the trimmer copies the video data without re-encoding, which preserves the original quality exactly. Re-encoding only happens when you convert between containers, and that fallback re-records the clip in real time. ### Can I trim videos on my phone or tablet? Yes. The trimmer works in any modern mobile browser including Safari on iOS and Chrome on Android. The same 500 MB cap applies, and phones have less RAM than computers, so a file near the cap can run out of memory on a phone that a laptop handles fine. ### How is this different from Kapwing or Clideo? Unlike Kapwing or Clideo, this tool does not upload your video to a server. Processing happens locally in your browser, so there is no watermark, no signup requirement, and no waiting for uploads and downloads. Your footage stays completely private. ### What does transmuxing mean? Transmuxing copies the existing video and audio streams into a new container without re-encoding. This is much faster than re-encoding and preserves 100% of the original quality. It works when the input and output formats use the same codecs. ### Can I trim multiple sections from one video? No, not in one pass. The tool trims a single continuous segment per operation. To extract multiple sections, trim each segment separately and download them individually. You can reload the original video as many times as needed. ### Why does processing seem slow on large files? Trimming runs on your device's CPU and available RAM rather than on a server. Close other tabs to free up resources, and keep the trimmer tab in the foreground since browsers throttle background tabs. The fast path copies packets and finishes in seconds; when the output container differs from the input, the clip is re-recorded in real time and takes about as long as it plays. ## Related Tools - [Video to GIF Converter](https://findutils.com/media/video-to-gif/) - [Video Compressor](https://findutils.com/media/video-compressor/) - [Video Format Converter](https://findutils.com/media/video-format-converter/) - [Video Resizer](https://findutils.com/media/video-resizer/) - [Video Rotator](https://findutils.com/media/video-rotator/) - [Extract Audio from Video](https://findutils.com/media/video-to-audio/) - [Video Metadata Extractor](https://findutils.com/media/video-metadata-extractor/) - [Video Thumbnail Generator](https://findutils.com/media/video-thumbnail-generator/)