Resize video to any platform spec (YouTube, Reels, TikTok, custom) - OpenClip
OpenClipOpenClip
Get started
JASL
Trusted by 7,223+ paying creators

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

More free tools

Keep editing inside the same browser-only toolkit.

Video to JPG

Capture any frame as a full-resolution image.

Open tool

Frame Extractor

Pull single or batch stills from any video.

Open tool

MOV to MP3

Pull the audio out of iPhone MOV videos.

Open tool

Explore related resources