Video Resizer
Change a video's resolution to a standard preset, entirely in your browser via ffmpeg.wasm.
Different platforms and players expect different resolutions - 1080p for general upload, 720p or lower to save bandwidth or hit a smaller file size target. This tool re-scales your video to a standard preset (1080p, 720p, 480p, or 360p) using FFmpeg running locally via WebAssembly. Scaling always applies once you pick a target, so choosing a resolution above your source will upscale without adding real detail - pick a preset at or below your source resolution for the best result, and pair it with Video Compressor if file size matters too.
Loading tool
How it works
- 01
Drop or select your video.
- 02
Choose a target resolution preset (1080p, 720p, 480p, or 360p).
- 03
Click Resize and download the result.
Details
- Category
- Video
- Runs
- In your browser
- Files uploaded
- No
- Cost per run
- Free
- Sign-in
- Not required
- Works offline
- Yes, once loaded
Last updated 2026-08-03
Common questions
Will it upscale a small video?
Scaling always applies - picking a resolution higher than the source will upscale (and not add real detail). Pick a preset at or below your source resolution for best results.
Does it upload my video?
No - resizing runs locally with WebAssembly. Nothing leaves your browser.
Does resizing also change the file size?
Lowering resolution typically reduces file size as a side effect, but for guaranteed compression at the same resolution, use the Video Compressor.
Does it change the aspect ratio?
The standard presets keep the source aspect ratio and scale proportionally; use the Social Media Video Toolkit if you need to crop to a different aspect ratio like 9:16.