Video Compressor
Reduce file size directly in your browser.
Select Video to Begin
Drag & drop your file here, or click to browse. Processing is performed 100% locally on your computer with complete privacy.
Launch Video CompressorHow It Works
Upload Video
Select any large MP4, MOV, or WebM video file.
Choose Target Size / CRF
Pick a target file size or adjust the CRF quality slider.
Local Re-encoding
WebAssembly FFmpeg re-encodes the stream using modern codecs.
Download Optimized File
Instantly download a lightweight video ready for sharing.
Key Features & Benefits
Drastic Size Reduction
Reduce video file sizes by up to 80% with minimal visual difference.
100% In-Browser Privacy
Large video files never upload over your internet connection.
Email & Discord Friendly
Easily compress videos under 25MB or 8MB limits.
Custom CRF Control
Fine-tune the balance between bitrate and visual fidelity.
Frequently Asked Questions
How does the video compressor work?
It re-encodes your video directly in your browser using WebAssembly. This reduces the file size while trying to maintain as much visual quality as possible.
Will I lose quality?
Video compression is a trade-off between file size and quality. A lower compression level retains more quality, while a higher level reduces the file size more aggressively.
Are my videos uploaded to a server?
No, all processing happens locally on your device. Your videos never leave your browser, ensuring complete privacy and saving bandwidth.
What is the 'Compression Level' slider?
It controls the CRF (Constant Rate Factor). A lower value means better quality but larger file size. A higher value means smaller file size but lower quality.