Does cropping affect the whole video, or just one frame?

The crop region you select applies consistently across the entire video's duration — every frame is cropped to the same selected area.

Can I crop to a specific aspect ratio for a particular platform?

Yes, you can crop to standard aspect ratios (like a square or vertical 9:16 frame) or a fully custom region, depending on where the video needs to be used.

Does cropping reduce video quality?

The kept region retains the source footage's original pixel data — cropping removes the parts outside your selection rather than degrading what remains inside it.

Why would I crop a video instead of resizing it?

Resizing scales the whole frame to new dimensions while keeping everything visible. Cropping removes part of the frame entirely, which is what you want when you need to cut out unwanted content at the edges or change the video's aspect ratio without letterboxing.

How long does cropping a video take?

Processing time depends on your video's length and resolution and your device's processing power, since it's re-encoded entirely on your own hardware.

Is my video uploaded to a server?

No. Every operation runs locally in your browser using a real FFmpeg engine compiled to WebAssembly. Your video is never transmitted anywhere.

Crop Video

Crop the video frame to a selected region.

Processed entirely in your browser — your file is never uploaded anywhere.

Why crop video with Tools Root

Removing unwanted content at the edge of a frame, reformatting a video for a platform that expects a specific aspect ratio (like vertical video for mobile stories), or focusing attention on a specific part of the frame are all common reasons to crop rather than just resize.

Consistent cropping across the full timeline

Once you select a crop region on the preview frame, it applies uniformly across every frame of the video's duration, giving a clean, consistent result rather than a crop that only affects a single moment.

Common use cases

Reformatting a landscape video into a vertical 9:16 frame for mobile platforms, removing unwanted content visible at the edge of a screen recording, cropping out a watermark or logo from footage you have rights to modify, or focusing a wide shot down to a specific subject.

How to crop a video

1Upload your video file.
2Drag the crop boundary on the video preview frame.
3Preview how the cropped frame looks across the timeline.
4Download your cropped video.

Frequently asked questions

Related tools

Convert Video

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Compress Video

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Resize Video

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Trim Video

Cut a video down to a selected time range.