ConvertX

Fast, offline desktop file converter. Drag, pick a format, done.

Built with Tauri v2 + Svelte + Rust. Uses FFmpeg under the hood.

Features

• Convert videos, images, and audio between formats
• Resize images by pixels or percentage
• GIF editor with timeline trimmer for video-to-GIF clips
• Batch processing with per-file progress tracking
• Advanced options — resolution, FPS, trim, bitrate, encoder preset
• Dark / Light theme
• Fully offline, no uploads

Supported Formats

Type	Formats
Video	MP4, MKV, AVI, WebM, MOV, GIF, FLV, WMV, TS
Image	PNG, JPG, WebP, BMP, TIFF, ICO
Audio	MP3, WAV, FLAC, OGG, AAC, WMA, M4A, Opus

Build

Requirements: Rust, Node.js, FFmpeg binaries in src-tauri/bin/

npm install
npm run tauri build

Or use build.bat on Windows — it handles everything and copies output to release/.

Dev

npm run tauri dev

Stack

• Frontend: Svelte 5, Vite
• Backend: Rust, Tauri v2
• Engine: FFmpeg (video/audio), image crate (images)