Video Resolution Resizer
Resize video resolution to 1080p, 720p, 480p, or 360p while preserving aspect ratio.
- 100% free
- Files stay on your device
- No sign-up, no watermark
Select video to resize
Supports MP4, MOV, WEBM, AVI, MKV
What is Video Resolution Resizer?
Scale high-definition video files down to 1080p, 720p, or 480p to conserve bandwidth, or adapt widescreen footage to vertical mobile formats using browser-native canvas drawing.
How to use Video Resolution Resizer
- 1
Add your file or input
Choose a supported file, drag it onto the upload area, or type/paste the data this tool works with.
- 2
Adjust the options
Pick the output format, quality, size or other settings the tool offers. Defaults work well for most files.
- 3
Process and download
Run the tool and save the result. Processing happens in your browser, so nothing is uploaded to a server.
Frequently asked questions
How does downscaling video resolution affect file size?
Downscaling from 4K (3840x2160) to 1080p (1920x1080) reduces total pixel count by 75%, allowing dramatic file size reductions with minimal perceptual loss on phone and laptop screens.
Can I preserve the original aspect ratio to avoid stretching?
Yes. Aspect ratio locking is enabled by default so changing the width automatically calculates the proportional height.
Does video resizing happen locally on my computer?
Yes. All frame rescaling is handled via hardware-accelerated HTML5 Canvas and WebAssembly encoders on your local machine.
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