How Online Video Compressors Work
Browser-based video compressors use either server-side processing (you upload, it compresses on their servers, you download) or WebAssembly (processing happens in your browser, files never leave your device). The latter is faster and more private.
Supported Input Formats
- MP4 (.mp4) — most common
- MOV (.mov) — Apple/iPhone videos
- AVI (.avi) — older Windows format
- MKV (.mkv) — flexible container
- WebM (.webm) — web video format
- WMV (.wmv) — Windows Media Video
Using the Doit Connect Video Compressor
- Open Video Compressor.
- Upload your video by dragging and dropping or clicking Browse.
- Select output quality (high/medium/low) or target file size.
- Click Compress and wait for processing.
- Preview the result — if acceptable, click Download.
Pro Tips for Better Results
- Always preview before downloading to confirm quality is acceptable
- For very large files (>500MB), start with light compression first
- Don't compress an already-compressed video multiple times — quality degrades each time
- Keep the original file as a backup