Compress videos. Keep control. Share faster.
Convert Fly gives casual creators pro-grade video compression, format conversion, and audio extraction tools—without ever leaving your browser. No accounts, no uploads, just instant, private results.
Estimated savings
up to 85%
Convert Fly runs entirely in your browser with WebCodecs. Your files stay local, period.
Every browser-based tool you need
Choose the workflow that fits your task. Each tool shares the same privacy-first engine and polished UX.
Compress Videos
Shrink file sizes with intelligent percentage-based bitrate control. Perfect for sharing and archiving.
- Percent-based quality control
- MP4 & WebM outputs
- Works up to 2GB per video
Convert Formats
Convert between MP4, WebM, MOV, and MKV in seconds. We transmux when possible to preserve quality.
- MP4 · WebM · MOV · MKV
- Fast transmuxing fallback
- No quality compromises
Extract Audio
Pull pristine audio tracks straight from your videos in MP3, WAV, AAC, OGG, or FLAC formats.
- MP3, WAV, AAC, OGG, FLAC
- High-quality encoders preloaded
- Entirely client-side
🔒 All Convert Fly tools run locally in your browser. Your files never leave your device.
How it works
Three simple steps. No installs, no uploads, no guesswork.
1. Drop your video
Drag in your file or browse from your device. We support MP4, WebM, MOV, MKV, AVI, and FLV up to 2GB.
2. Dial in the quality
Move the percentage slider and pick your output format. We show estimated sizes and guardrails, so you never end up with a bigger file.
3. Download instantly
Everything runs in your browser via WebCodecs. When it finishes, grab the optimized video immediately.
Ready to try it?
Jump straight into the compressor or queue up multiple videos at once. It all stays on your machine.
Start compressing nowFrequently asked questions
Quick answers about privacy, performance, and what Convert Fly can do.
Still have questions?
Contact support