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Video & AudioFree, no sign-upRuns in your browser

Resize Video

Scale a video down to a smaller resolution for sharing, email or web pages. The aspect ratio is kept automatically.

—Original
—Output size

Your file will appear here.

First use downloads the video engine once (about 31 MB). After that it’s cached and starts instantly.

Choosing a resolution

720p looks sharp on phones and laptops and is the best balance for sharing. 480p suits email and slow connections. Upscaling can’t add detail, so only smaller sizes are offered. The output is an MP4 (H.264) file that plays everywhere.

How to use the Resize Video

  1. Choose a video file.
  2. Pick the new resolution.
  3. Click Resize video and download the MP4.

Frequently asked questions

Is my video uploaded to a server?

No. The conversion runs inside your browser using a WebAssembly version of FFmpeg, the same engine professional video tools use. Your file never leaves your device.

Why does it take longer than desktop software?

It runs on a single processor core inside your browser, so re-encoding is slower than native apps. Conversions that can copy the original streams (no re-encoding) take only seconds.

Will the video be stretched?

No. The height is calculated from the width so the aspect ratio stays exactly the same.