Open Source Desktop App

Flux Convert

Universal Desktop Transcoding Workbench

Convert video, audio, images, and documents, entirely on your device. No uploads, no servers, no limits.

View on GitHubFree for personal use

Built Different

Everything you need, nothing you don't.

100% Local

All conversions happen on your machine. Your files never touch any server, ever.

FFmpeg Powered

Industry-standard encoding engine for maximum compatibility and quality output.

Batch Processing

Convert entire folders at once with drag-and-drop and intelligent queue management.

Smart Queue

Up to 8 concurrent conversions with automatic retry on failure and real-time progress.

Quality Presets

Choose Fastest, Balanced, or Best Quality, tune encoding to exactly what you need.

Cross-Platform

Native builds for Windows, macOS, and Linux from a single codebase.

Supported Formats

16+ formats across video, audio, image, and documents.

MP4
MKV
WebM
MOV
AVI

See It In Action

Main Interface
Active Conversion
Settings
About

How It Works

01

Drop Your Files

Drag & drop files or entire folders into the input panel. Any format, any size.

02

Choose a Format

Select your target format from Video, Audio, or Image tabs. Pick a quality preset.

03

Start Conversion

Hit Start Conversion and watch the queue process in real-time, right on your machine.

Ready to Convert?

Free for personal, educational, and non-profit use.

View on GitHub
PolyForm Noncommercial License 1.0.0Requires Node.js v18+