Video Compressor

Reduce video file size by optimizing bitrate and resolution scaling. See verified before and after sizes with real percentage savings.

In-Browser(Zero Server Uploads)

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About Video Compressor

Runs in your browser

Reduce the size of a browser-supported video by lowering bitrate or dimensions. This helps with shorter clips for sharing or storage. The output is WebM, and the final file size depends on the source content; inspect actual byte savings before downloading.

The browser decodes the source video, draws scaled frames to a canvas, and records the result at the chosen bitrate. The output is a WebM file; supported source formats and encoding speed depend on the browser and device. Presets change bitrate and resolution but cannot guarantee a particular final file size. Use the high, medium, or light preset and inspect the displayed output size.

High-resolution (4K) video encoding requires a modern CPU or GPU hardware acceleration. Processing speed and format support depend on the browser, device memory, and source file. Keep the original material supplied to Video Compressor until its compressed Video has been checked for the intended use.

How It Works

🔒 100% Client-Side In-Browser Execution: All processing occurs locally in your device memory. No files, documents, or data are transmitted over the internet or stored on remote servers.

How to Use Video Compressor

Choose a video your browser can play.

Select a bitrate preset and resolution scale.

Compress the clip locally, then compare the actual output size with the original.

Download the WebM file if the result meets your needs.

Supported Formats

MP4WebMMOVMKV

Key Capabilities

Three bitrate presets and a resolution scale control

Local canvas and MediaRecorder processing

Progress and actual output-size comparison

WebM download without uploading the source

Application Scenarios

Compressing videos to send via Discord, WhatsApp, or email attachment

Optimizing large phone recordings for faster social media upload

Saving storage space on local hard drives and cloud drives

Technical Constraints

•High-resolution (4K) video encoding requires a modern CPU or GPU hardware acceleration.

Frequently Asked Questions about Video Compressor

How can I compress a video to fit Discord's 25MB limit?

Choose a lower bitrate and resolution, then inspect the actual result. The tool cannot guarantee a 25 MB output; if it remains too large, shorten the clip or try a lower setting.

Are my private videos uploaded anywhere?

Does compressing a video make it look blurry?