Resize Video
Change a video’s resolution in your browser — no upload, no watermark.
How it works
- Select a video — it stays on your device.
- Pick a target resolution (1080p, 720p, 480p or 360p).
- Click Resize — the video is rescaled in your browser, keeping its aspect ratio.
- Your resized MP4 downloads automatically.
Frequently asked questions
- Is my video uploaded anywhere?
- No. Resizing runs entirely in your browser with ffmpeg.wasm; the file never leaves your device.
- Will it stay in proportion?
- Yes. Width is scaled automatically to preserve the original aspect ratio at your chosen height.
- What format do I get back?
- A standard MP4 (H.264/AAC) that plays everywhere. Larger clips take longer since processing happens on your device.