Resize Video Online — Change Resolution
Change your video resolution and aspect ratio for any platform. Choose from presets like 1080p, 720p, TikTok, Instagram, and YouTube.
- Preset resolutions and social formats
- Cover and contain fit modes
- Fast local processing
Resize Video
Upload a video to get started instantly
See it in action
Preview how the resize video tool works before you upload your own video. The interface is fast, simple, and runs entirely in your browser.
Output size
What you can do with this tool
Real ways creators, marketers, and teams use it every day.
Social media formats
Export TikTok, Reels, Shorts, and feed posts.
Reduce file size
Downscale 4K to 1080p for easier sharing.
Match platform specs
Hit exact resolution requirements for ads or uploads.
How it works
Three simple steps. No signup, no installer, no waiting.
Upload your video
Open the clip in the browser.
Pick a size
Choose a resolution preset or social format.
Export
Download the resized video.
Features you'll love
Everything is built for speed, privacy, and zero friction.
Resolution presets
1080p, 720p, 480p, and more.
Social formats
TikTok/Reels, Instagram Square, YouTube.
Fit modes
Cover to fill or contain to avoid cropping.
Quality-aware scaling
Downscale cleanly with minimal artifacts.
Why creators choose us
We focus on privacy, speed, and simplicity — not upsells.
Resizing video is essential when sharing across platforms with different requirements. A single source clip can become a 9:16 Short, a 1:1 feed post, or a 16:9 YouTube video.
Our resizer runs locally so you can batch through sizes quickly without uploading anything.
Frequently asked questions
Will resizing reduce quality?▼
Downscaling preserves quality. Upscaling uses interpolation to minimize artifacts.
What social formats are supported?▼
TikTok/Reels (9:16), Instagram Square (1:1), YouTube (16:9), and more.
Can I keep the original aspect ratio?▼
Yes. Use the contain fit mode to avoid cropping or stretching.
Related tools
Ready to resize video?
Start editing now — no upload to servers, no account needed.