Resize video

Change a video's resolution to 480p, 720p, 1080p or custom dimensions. Keep aspect ratio with padding.

Features

One-click 480p, 720p and 1080p presets plus a custom width × height in pixels.
Keep-aspect-ratio mode adds letterbox padding so the frame is never stretched or distorted.
Downscale clips for email, web upload limits or faster sharing — rescaled in-browser, never uploaded.

How it works

Drop a video — MP4, WebM, MOV or MKV — into the resizer.
Pick a 480p, 720p or 1080p preset, or choose Custom and type the exact width and height.
Optionally tick Keep aspect ratio to letterbox, then click Resize and download.

Your files never leave this page

Every conversion runs entirely in your browser using WebAssembly. There is no upload, no server-side processing, no analytics, and no cookies. Open DevTools → Network during the operation and you will see zero outbound traffic.

Related tools

Topics covered

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