Video Compressor - Compress Video Online Free | Reduce Video File Size

Compress your video files online for free. Adjust quality settings, preview compressed output, and download reduced-size videos instantly. No upload to server required.

Video Compressor

Free, browser-based video compression

How to Use

1 Upload or drop your video file into the tool.

2 Adjust quality, resolution scale, and frame rate.

3 Click Compress Video to start processing.

4 Preview the result and download your compressed file.

Tips

Lower quality (30-50%) dramatically reduces file size for web sharing.

Use 50% resolution scale to cut file size by up to 75%.

24 FPS is suitable for most non-action content.

For presentations, 25% scale + 50% quality works great.

Supported Formats

MP4 WebM MOV AVI MKV OGV

Output is always in WebM format.

Limits

Max file size: 500 MB
Processing time depends on video length and your device.
Large files may take a few minutes.

Video Compressor

All processing is done in your browser. Your video is never uploaded to any server.

Drop video here or click to upload MP4, WebM, MOV, AVI supported

Quality 50%

Resolution

Frame Rate

Original

Compressed Preview

Processing...

Frequently Asked Questions

Is my video uploaded to a server?

No. All compression happens entirely inside your browser using HTML5 Canvas and MediaRecorder APIs. Your video never leaves your device.

What does the quality slider control?

The quality slider adjusts the video bitrate used during re-encoding. Lower quality means lower bitrate, resulting in smaller file size but more compression artifacts.

What is resolution scale?

Resolution scale reduces the pixel dimensions of the output. 50% scale on a 1920x1080 video produces a 960x540 output, significantly reducing file size.

Why is the output WebM format?

WebM is the only format natively supported for recording via the browser's MediaRecorder API. It is widely supported in modern browsers and web platforms.

Why is compression slow?

Browser-based compression processes video frame-by-frame using your CPU. Speed depends on your device performance, video length, and selected resolution. Longer videos take more time.

Can I compress multiple videos?

Currently one video at a time. After downloading your result, click Reset to upload and compress a new video.

Will audio be preserved?

The tool attempts to include audio in the output. Audio support depends on browser compatibility. Chrome provides the best results for audio preservation.

100% Private

No data is sent to any server. Processing is fully client-side. No account required. No tracking of your files.

About This Tool

This free online video compressor lets you reduce video file sizes directly in your browser without installing any software. Ideal for compressing videos for email, web upload, social media, or storage. Supports MP4, WebM, MOV, AVI and more. Adjust quality and resolution to find the perfect balance between size and clarity.