ShadowToolkit

Video Compressor

Reduce video file size locally in your browser.

100% In-Browser
All-In-One StudioVideo Playground

Trim, crop, compress, convert, rotate, extract frames, merge videos, and replace audio in one seamless flow!

Try Video Playground
100% In-Browser PrivacyLocal

Your files and data are processed locally and never leave your device.

Video Playground

Drop your video here • MP4 · WebM · MOV · AVI · MKV · GIF • Processed locally

Max size: 800MB •100% In-Browser

What is Video Compressor?

Video Compressor reduces the file size of heavy video recordings and camera clips by adjusting video bitrate, frame rate, and resolution scaling. Shrink large video files by up to 80% to fit under email, Discord, and messaging attachment limits.

Zero-Server Client-Side Guarantee

Unlike legacy online utilities that upload sensitive media and documents to remote cloud storage, Shadow Toolkit executes this entire operation directly within your browser's local runtime. Your raw data never crosses the network.

Key Capabilities

  • Adaptive video bitrate reduction to achieve significant file size savings
  • Configurable compression profiles: Low, Medium, High compression
  • Supports MP4, WebM, and MOV input formats
  • Zero upload queues—compression begins instantly on your local CPU/GPU
  • 100% private in-browser processing with zero server uploads

Common Use Cases

1Compressing 50MB+ screen recordings to fit under Discord's 25MB attachment limit
2Optimizing video assets for faster mobile web page loading speeds
3Shrinking video files before uploading to cloud storage or emailing to clients
4Preparing high-quality digital multimedia assets for social media sharing, presentations, and websites

How to use Video Compressor

01

Upload Video

Select the large video file you want to shrink.

02

Choose Compression Level

Select your desired balance of file reduction and visual quality.

03

Download Compressed Video

Save your lightweight video file.

04

Download Media Asset

Preview the rendered media in the in-browser player and click 'Download' to save the finished audio/video file locally.

Frequently Asked Questions

High-bitrate camera videos and uncompressed screen recordings can typically be reduced by 50% to 80% with minimal visual difference.

Related Tools

Local

Video Playground Studio

All-in-one video studio for trimming, converting, compressing & editing.

Use Tool
Local

Video Converter (MP4 to WebM / GIF)

Convert video formats between MP4, WebM, and GIF.

Use Tool
Local

Mp4 To Gif

Mp4 To Gif running client-side on your device.

Use Tool
Local

Audio Compressor

Audio Compressor running client-side on your device.

Use Tool