> ## Documentation Index
> Fetch the complete documentation index at: https://vidow.io/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# 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.

<Info>The video compressor is a **Professional** feature. [Upgrade your plan](/billing/plans) to access it.</Info>

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

<Steps>
  <Step title="Open the tool">
    Go to [vidow.io/tools/compress](https://vidow.io/tools/compress).
  </Step>

  <Step title="Upload your video">
    Click **Upload** or drag a video file onto the page.
  </Step>

  <Step title="Choose your settings">
    Select a quality preset or set a target file size. Optionally scale down the resolution.
  </Step>

  <Step title="Compress">
    Click **Compress**. Processing runs entirely in your browser — no data is sent to any server.
  </Step>

  <Step title="Download the result">
    When compression finishes, download the compressed file.
  </Step>
</Steps>

## 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

<CardGroup cols={3}>
  <Card title="Video Trimmer" href="/tools/video-trimmer">
    Cut your video to the exact length you need before compressing.
  </Card>

  <Card title="Video to GIF" href="/tools/video-to-gif">
    Convert short clips into animated GIFs.
  </Card>

  <Card title="Merge Videos" href="/tools/merge-videos">
    Join multiple video files into one before compressing.
  </Card>
</CardGroup>