Video resizer online

Resize videos quickly and easily with preset aspect ratios.

An image of video aspect ratio selector tool in Clipchamp.

Resize videos for all platforms

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Apply popular aspect ratio presets

Resize MP4 and other video files to share videos without losing video quality or changing resolution. Preview and select from common aspect ratios including 16:9, 9:16, 1:1, 4:3, 4:5, 2:3, and 21:9.

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Resize videos ready for social media

Effortlessly share the same video across various video platforms by resizing in one click. Turn YouTube content into Instagram videos or turn TikTok videos into viral videos on Instagram, Facebook, Bluesky, X, LinkedIn, and other platforms.

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Customize and crop video size

Change the aspect ratio of assets within a video or adjust the width and height of a whole clip to a custom size with the freehand crop tool. Remove black borders from video frames with the fill button and zoom in on specific sections to erase unwanted visuals and highlight focal points.

How to resize video in Clipchamp

Image showing drag and drop feature of Clipchamp to add a video to the editing timeline.
Image showing the Clipchamp aspect ratio selector
Image of trimming a video in Clipchamp
Image of saving a video in high quality in Clipchamp

Transform horizontal clips into vertical format

An image representing the video aspect ratio selector tool in Clipchamp that can convert a YouTube video to the right size for Instagram in a click.

Adjust video sizes to remove distractions

An image of a girl looking at her phone with cropping handles surrounding the video frame.

Beyond video resize presets

An image of the crop feature.
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Need more help using the video resizer online?

Learn how to resize a video and change video aspect ratios to suit common social media video specifications in this step-by-step guide. 

An image of a user editing the aspect ratio of a video in Clipchamp.

Frequently asked questions

Resize videos quickly for free