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Guide
About the Video Editor
This video editor does the everyday jobs — cutting a clip, cropping it for social media, shrinking it to fit an upload limit, or turning it into a GIF — entirely inside your browser. It uses WebCodecs, the video encoders and decoders built into modern browsers, often with hardware acceleration, so it is fast and your video never leaves your computer. When you only trim, it copies the original video without re-encoding, so there is no loss of quality at all.
Which format should I export?
- MP4 (H.264 and AAC) — plays on every phone, computer, TV and social network. The safe choice.
- WebM (VP9 and Opus) — smaller at the same quality and ideal for websites; some Apple apps cannot play it.
- GIF — a silent, looping animation for chats, docs and READMEs. Keep it short and narrow, as GIFs are large.
- MP3 / WAV — just the sound, for podcasts, music or transcription.
How compression to a file size works
Pick a size and the editor works out the video bitrate that fits: the target size divided by the clip's length, minus room for the sound. Long clips at small sizes get few bits per second and look blocky, so lower the resolution as well — 720p at 10 MB looks far better than 1080p at 10 MB.
How to use it
- 1Open a video, or try the sample.
- 2Drag the blue handles to trim, and crop, rotate or resize if you need to.
- 3Choose MP4, WebM, GIF or MP3 and a quality or target size.
- 4Click Export, check the result, and download it.
Frequently asked questions
Is my video uploaded?
No. The video is read, edited and encoded by your own browser, so it never leaves your device. You can even use the editor offline once the page has loaded.
Is there a watermark or length limit?
No watermark and no fixed limit. Very long or 4K videos need enough memory on your device, since the result is held in the tab until you download it.
Which files can I open?
MP4, MOV, M4V, WebM, MKV and Ogg video, with H.264, HEVC, VP8, VP9 or AV1. HEVC (common on iPhones) needs a browser and device that can decode it, such as Safari, Edge or Chrome on most recent computers. AVI and WMV are not supported.
Why is trimming so fast?
When you only trim and keep “Best” quality, the original video is copied without re-encoding. The cut snaps to the nearest key frame in the original, which may add a fraction of a second at the start.
How do I make a video for TikTok, Reels or Shorts?
Turn on Crop and pick 9:16, move the box over the subject, set the resolution to 1080p, and export MP4.