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Toolzum

Crop Video

Crop the visual area of your MP4 or WebM video directly in the browser with 9:16, 1:1, 16:9 presets or custom dimensions with X/Y offsets. Free to start with no signup.

Runs on FFmpeg

100% Local Browser Native

How to Use the Crop Video

1. Upload the video

Drop one MP4 or WebM file. Processing runs on FFmpeg.

2. Configure crop

Pick 9:16, 1:1, 16:9, or Custom with X/Y offsets — free crops limited to 3 a day.

3. Download result

The cropped MP4 saves straight to your device — downloads on local tools are unlimited.

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Frequently Asked Questions

What video formats are supported for cropping?

MP4 and WebM files. The tool scales the source to cover your target frame, then crops with FFmpeg (libx264, CRF 23, yuv420p with faststart for browser playback).

Can I crop to a specific aspect ratio?

Yes. Choose 9:16 Reel/Shorts (1080x1920), 1:1 Square (1080x1080), 16:9 YouTube (1920x1080), or Custom numeric width/height with X/Y offsets. A dashed overlay previews the approximate framing.

Does cropping reduce video quality?

Cropping always re-encodes (libx264 at CRF 23), so expect a normal conversion pass with a small quality cost. Keep the master archived; distribute the cropped copy.

What's the maximum video length I can crop?

There's no strict limit, but longer videos (30+ minutes) may take several minutes to process depending on your device.

Is the cropped video downloaded automatically?

Yes. After processing completes, the cropped video is downloaded to your device. No server storage involved.

Last updated October 2026