---
title: 'Resize video to any platform spec (YouTube, Reels, TikTok, custom) - OpenClip'
description: 'Change video dimensions to any platform preset or custom size, without re-encoding twice. Runs in your browser, your video never leaves your device.'
canonical: 'https://openclip.app/tools/resize-video-online'
markdown: 'https://openclip.app/tools/resize-video-online.md'
---

[Tools](https://openclip.app/tools) Resize video to any platform spec (YouTube, Reels, TikTok, custom)

# 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.

## Questions & answers

### Will resizing make my video blurry?

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

### Will my video get sent to a server?

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

### Do I need to know exact dimensions?

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

### What if I need to crop to a different aspect, not just resize?

Use the [video cropper](/tools/crop-video-online) 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](https://openclip.app/register)

### More free tools

Keep editing inside the same browser-only toolkit.

- [Thumbnail Extractor](https://openclip.app/tools/extract-video-thumbnails): Extract frames as thumbnails.
- [Shorts Converter](https://openclip.app/tools/convert-video-to-youtube-shorts): Convert videos to vertical shorts.
- [Video Rotator](https://openclip.app/tools/rotate-video-online): Rotate or flip videos 90°, 180°, or mirror.