1
Upload MP42
Configure Quality3
Compress MP44
Download1
Upload MP4Choose the MP4 file you want to compress.
2
Configure Quality
3
Compress MP4
4
Download
video Converter• 100% Client-Side
Compress Video Converter
Reduce MP4 file sizes by 40% to 70% locally on your CPU.
mp4→mp4
Drop MP4 file here, or browse
Select file for private local conversion
Private by Design
Your files are processed directly on your device using WebAssembly, HTML5 Canvas, and client-side runtimes.
No server upload No cloud copy 100% local processing
How To Convert
How to Compress a MP4 File
Step 1
Upload MP4
Choose the MP4 file you want to compress.
Step 2
Configure Quality
Select your preferred compression quality.
Step 3
Compress MP4
Start the compression process.
Step 4
Download
Download your compressed file.
Frequently Asked Questions
Questions about Compress Video Conversion
Are my videos uploaded anywhere?
No, video encoding runs 100% inside your browser via WebAssembly.
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