Crop Video
Crop video online for free — drag a box on the frame to cut away edges, or pick a ratio like 9:16 for Reels and TikTok, 1:1 square or 4:5 portrait and move the box into place. Works with MP4, MOV, WebM and MKV and keeps the audio. Runs privately in your browser.
100% private — your video is processed on your device, never uploaded. Conversion happens on your device; nothing is uploaded.
Processing uses your browser’s built-in video encoders (WebCodecs) through the open-source Mediabunny library — your files are never uploaded. Works best in recent Chrome, Edge and Safari.
How to crop a video
- Drop your video in the box.
- Drag on the frame to draw the crop area, or choose an aspect ratio and move the box.
- Use the slider to check other moments in the video.
- Click Crop video, preview and download the MP4.
What you can use it for
- Reframe landscape video for Reels, Shorts and TikTok
- Remove black bars, watermarks or distracting edges
- Make square and 4:5 videos for feeds
- Zoom in on the important part of a recording
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See all free image tools →Frequently asked questions
How do I crop a video?
Drop it in, drag a box over the part you want to keep (or pick a ratio and position the box), then click Crop video.
Crop or resize — what's the difference?
Cropping cuts away part of the picture; resizing changes the dimensions of the whole picture. Use Resize Video to change resolution.
Is my video uploaded?
No. The video is read and encoded by your own browser using its built-in video encoders, so it never leaves your device — even large or private videos stay private.
Is there a file size limit?
There's no upload limit. The finished video is held in memory before download, so files up to a few GB work on most computers; very large files need more RAM.
Which browsers work?
Recent Chrome, Edge and Safari work best (they have hardware video encoders). Firefox 130+ works for most files.