Video Resize

Resize video online free — change resolution to custom width and height. Supports MP4, WebM and MOV. FFmpeg browser-based, no upload required.

Video Resizer is a free online tool that lets you change video resolution and aspect ratio. Supports MP4, WebM and more with quick presets for social media sizes (1:1, 9:16, 16:9). All processing happens in your browser — no files are uploaded to any server, keeping your content private.

Drag & drop a video or click to select
lock Your files never leave your device

How to use Video Resize?

  1. Upload your video file.
  2. Select the desired resolution or aspect ratio preset.
  3. Click convert and download the resized video.

Frequently asked questions about Video Resize

Does reducing video size lower the quality?

Lowering resolution reduces pixel count which may slightly decrease quality, but on smaller screens the difference is barely noticeable.

Are there presets for social media video sizes?

Yes, presets are available for Instagram (1:1), TikTok/Reels (9:16), YouTube (16:9) and other major platforms.

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