Video Compressor — Reduce Video File Size in Your Browser

Compress video files directly in your browser with Video Downloader Plus. Reduce file size while preserving quality — no uploads, no server processing.

The video compressor is a Professional feature. Upgrade your plan to access it.

The Video Downloader Plus video compressor reduces video file size directly in your browser. No uploads, no waiting on a server — compression runs locally using WebAssembly.

How to compress a video

1. Open the tool

   Go to vidow.io/tools/compress.

2. Upload your video

   Click Upload or drag a video file onto the page.

3. Choose your settings

   Select a quality preset or set a target file size. Optionally scale down the resolution.

4. Compress

   Click Compress. Processing runs entirely in your browser — no data is sent to any server.

5. Download the result

   When compression finishes, download the compressed file.

Supported formats

	Formats
Input	MP4, WebM, MKV, MOV, AVI
Output	MP4, WebM

Compression options

Option	Description
Quality preset	High, Medium, or Low — balances file size against visual quality
Target file size	Set a maximum size in MB; Video Downloader Plus selects an appropriate quality level
Resolution scaling	Downscale to 1080p, 720p, 480p, or 360p to reduce file size further

How it works

Compression runs locally in your browser using a WebAssembly build of FFmpeg. Your video file is never uploaded to any server. Processing speed depends on your device — modern computers handle typical files in under a minute.

Related tools

Video Trimmer

Cut your video to the exact length you need before compressing.

Video to GIF

Convert short clips into animated GIFs.

Merge Videos

Join multiple video files into one before compressing.