All media toolsSIZE · LOCAL PROCESSING

Video Resizer

Resize video to 480p, 720p, 1080p, or custom dimensions locally.

FFmpeg.wasm · Web Worker

The ~32 MB single-thread core downloads only when processing begins and is browser-cached. It has fewer codecs than desktop FFmpeg, and speed depends on your CPU and memory.

GUIDE

How to change video resolution

Reducing resolution cuts delivery and storage cost and helps meet presentation or social-platform requirements. Aspect-ratio locking prevents people and text from being stretched.

Upscaling low-resolution footage cannot create real detail; it mostly adds pixels and file size. Downscaling is usually the useful direction.

  1. 01

    Load a video

    Choose a file and check the detected source dimensions.

  2. 02

    Set dimensions

    Choose a common width or custom value and normally keep aspect ratio.

  3. 03

    Convert and download

    Run the Worker and preview the resulting MP4.