Resize video to any platform spec (YouTube, Reels, TikTok, custom) - OpenClip
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Resize video to any platform spec (YouTube, Reels, TikTok, custom)

Change video dimensions to any platform preset or custom size, without re-encoding twice. Runs in your browser, your video never leaves your device.

1

Upload your video

Drop any video file to start. Processing happens in your browser.

2

Choose dimensions

Select a preset (YouTube, Instagram, TikTok) or enter custom dimensions.

3

Download resized video

Export your perfectly sized video ready for any platform.

Step 1

Upload your video

MP4, MOV, WEBM, or MKV. Files never leave your device.

Questions & answers

Downscaling preserves quality. Upscaling beyond the source resolution can soften the image; that's a physics constraint, not a tool limit.

No. Resizing runs in your browser, your video never leaves your device, and we keep nothing.

No. Pick a platform preset (YouTube 16:9, Reels 9:16, TikTok 9:16, etc.) and the dimensions are filled in for you.

Use the video cropper for cropping to a different aspect ratio. Resizing scales the whole frame, cropping cuts it.

Stop editing one clip at a time.

OpenClip finds your best moments, reframes them face-aware for every platform, writes the captions, and posts them. One upload, a week of content.

Start free

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Keep editing inside the same browser-only toolkit.

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