Online Video Cropper
Use Online Video Cropper, review the result, and keep the original until the output is checked.
How to use Online Video Cropper
- Select one video - this page loads a single file and draws its first frame as the image you cut on.
- Drag the box over the area to keep, or lock an Aspect Ratio (16:9, 9:16, 4:3, 1:1) first so the box cannot drift off shape.
- Type an exact Width (px) and Height (px) and the box resizes about its centre - it cannot reach past the video, so a large number is clamped to what the clip holds; dragging the box writes the measured size back into both fields.
- Choose Output Format and press Crop Video; the result arrives as cropped-video with that extension.
What Online Video Cropper actually does to your file
Everything outside the box is discarded, so confirm the framing on a clip that pans or has subtitles near the edges. Cropping does not rescale: a 1920x1080 source cropped to 640x360 leaves you with a genuinely smaller picture, and if you then need 1080p back you are upscaling. Edges are rounded to an even number of pixels, which some containers insist on.
Online Video Cropper FAQ
What does Online Video Cropper do?
Crop videos online quickly and for free with our easy-to-use tool. Trim unwanted parts, adjust aspect ratio, and resize your video while keeping the best quality. Supports all popular formats like MP4, MOV, AVI, and MKV.
Which files work with Online Video Cropper?
This category commonly supports MP4, MOV, AVI, MKV, WMV, FLV, WebM, and 3GP. Use the accepted file types shown in the uploader, because support varies by browser and by the engine behind each tool.
Can I crop to an exact size or ratio?
Use the ratio and dimension controls to lock the output before you apply the crop. Cropping removes pixels permanently from the downloaded copy, so keep the original if you may need the full frame later.
Will my original file be changed?
No. The work is done on a copy in this tab by a WebAssembly build of ffmpeg, and the result arrives as a separate download, so your original is still there if you need it.
How is my file processed?
It is not uploaded. The processing is done locally by a WebAssembly build of ffmpeg, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.
Is the Online Video Cropper free?
Yes. The Online Video Cropper is free with no trial limit, subscription, or watermark on downloads. You can use it for personal and commercial projects without creating an account.