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Compress Video

Reduce video file size while maintaining quality. Supports MP4, WebM, MOV and more. Lightning-fast native browser compression. 100% browser-based. Zero uploads.

No Upload Required MP4 / WebM / MOV 3 Quality Levels Browser Native

Drop your video here

or click to browse files from your device

Supports MP4, WebM, MOV, AVI —Up to 500 MB

How it works

Three simple steps

1

1. Upload your video

Drag and drop or click to select a video file. MP4, WebM, MOV, and AVI supported up to 500 MB.

2

2. Choose compression level

Pick Low, Medium, or High depending on your quality and size needs.

3

3. Download compressed video

See the size comparison and download your smaller video file instantly.

Why use

Why choose ToolKnit for Video Compression?

100% Private —No Server Uploads

Your video never leaves your device. All compression is done locally using your browser's native engine. No data is sent to any server —ever.

Lightning-Fast Native Engine

Uses your browser's built-in video encoder for real-time compression —no heavy engine downloads, no waiting. Compresses as fast as the video plays.

Multiple Formats

Supports MP4, WebM, MOV, and AVI input. Output in WebM or MP4 format depending on your browser, optimized for maximum compatibility.

Up to 90% Smaller

Dramatically reduce video file size for email, messaging apps, social media, and cloud storage. Three compression levels to match your needs.

Pro Tips

  • ● Low compression keeps near-original quality —great for archiving important recordings.
  • ● Medium compression is perfect for sharing on social media and messaging apps.
  • ● High compression creates the smallest files —ideal for email attachments (under 25 MB).
  • ● Compression time depends on video length and your device's processing power. Keep the tab active.
FAQ

Frequently Asked Questions

What video formats are supported?

MP4, WebM, MOV, and AVI are all supported. The output is WebM or MP4 depending on your browser's capabilities.

Are my videos uploaded to a server?

No. All compression happens entirely in your browser using the Canvas API and MediaRecorder. Your videos never leave your device.

What is the maximum file size?

The tool supports video files up to 500 MB. Larger files may cause performance issues depending on your device's processing power.

What are the three compression levels?

Low compression keeps near-original quality with 30-50% size reduction. Medium balances quality and size with 50-70% reduction. High compression maximizes size reduction with 70-90% smaller files.

Why is the compression taking so long?

Compression time depends on video length, resolution, and your device's CPU. The browser processes each frame in real-time. Keep the tab active and avoid heavy multitasking for best results.

Will the output work on all devices?

Output is typically WebM or MP4, both widely supported. MP4 (H.264) has the broadest compatibility across all devices and platforms.