Home › Video › Crop Video

Crop Video Online

Crop a video to square, vertical 9:16, 4:5, or 16:9 in your browser, centered, for Reels, TikTok, and Shorts. Nothing uploaded.

Drop a file here, paste with Ctrl+V, or

Accepts .mp4, .mov, .webm, .mkv, .avi, .m4v · Processed on your device, never uploaded

Add the video, then drag a box over the frame; lock it to 9:16 for Reels, TikTok, and Shorts.

Runs on FFmpeg compiled to WebAssembly (a 31 MB download the first time, then cached). Your file stays in this tab.

About this tool

Reframe a landscape recording for vertical platforms, or square it up for a feed. Drag the crop box over a frame of the video, optionally locked to 9:16, 1:1, 4:5, or 16:9, and the video is cut to that exact area and re-encoded to H.264 MP4 with the audio untouched. Expect roughly real-time processing, since cropping requires re-encoding.

How to use it

  1. Drop your MP4, MOV, WebM or MKV file into the box above, or click to browse. Nothing is uploaded.
  2. Adjust the options if you want; the defaults suit most files.
  3. Click the button and wait a moment.
  4. Download the result.

Questions

Can I choose which part to keep?

Yes. Drag the box anywhere on the preview frame and resize it with the handles; the shape lock keeps the ratio while you move it.

Does cropping reduce quality?

The video is re-encoded at a high quality setting; for typical phone footage the difference is not visible.

Is it free, are files uploaded, which browsers work: the general questions are answered once for the whole site.

Format guides

Related tools

More video tools

View all
MOV to MP4.mov → .mp4MKV to MP4.mkv → .mp4WebM to MP4.webm → .mp4AVI to MP4.avi → .mp4MP4 to WebM.mp4 → .webmCompress VideoShrink MP4, MOV, WebM, and MKV videos for email, Discord, and messaging appsCompress Video for DiscordShrink a video to fit the Discord upload limit (10 MB free, 50 MB Nitro Basic, 500 MB Nitro) in your browserCompress Video for EmailMake a video small enough to attach to an email (25 MB Gmail and Outlook limit, or 20 and 10 MB) in your browser