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Changelog

A complete history of ConvX releases. Every update, every fix, every new format.

v1.5.0 : February 2026

  • Removed: Calibre dependency (saves 1.1 GB). MOBI to EPUB conversion now uses lightweight Python mobi package
  • Removed: EPUB to MOBI conversion (MOBI format discontinued by Amazon)
  • Optimized: Reduced Linux LibreOffice install from ~794 MB to ~190 MB by using minimal packages

v1.4.0 : February 2026

  • Added: EPUB to PDF conversion
  • Added: RAW photo support (CR2, NEF, ARW, DNG) to JPEG/PNG/WebP
  • Added: New --copy-audio flag for lossless audio stream passthrough
  • Added: MCP server get_format_info tool for querying supported formats
  • Fixed: Color profile handling in HEIC to JPEG conversion
  • Performance: 2x faster PNG encoding on Apple Silicon

v1.3.0 : January 2026

  • Added: SVG to PNG/JPEG rasterization with configurable DPI
  • Added: FLAC to MP3/AAC/OGG conversion
  • Added: New instagram-reel and tiktok presets
  • Added: Watch mode now supports recursive directory monitoring
  • Fixed: Audio sync issues in long MKV to MP4 conversions
  • CLI: Added --dry-run flag to preview conversions without writing files

v1.2.0 : December 2025

  • Added: PDF to DOCX conversion (text-based PDFs)
  • Added: WebM to MP4 and MP4 to WebM conversion
  • Added: New web-image preset (auto-selects WebP with 82% quality)
  • Added: Batch processing now shows per-file progress bars
  • Fixed: Frame rate detection on variable frame rate videos
  • Added: MCP server batch_convert tool

v1.1.0 : November 2025

  • Added: MCP server for AI agent integration
  • Added: 8 new presets including discord-video, email-attachment, 4k-archive
  • Added: New --max-size flag for size-constrained conversions
  • Added: AVIF encoding/decoding support
  • Fixed: Transparency preservation in PNG to WebP conversion
  • CLI: Added convx formats command for listing supported formats

v1.0.0 : October 2025

  • Release: Initial release
  • Desktop: App for macOS, Windows, and Linux
  • CLI: Convert, batch, and watch commands
  • Formats: 38 supported formats, 300+ conversion paths
  • Presets: 6 built-in presets
  • Performance: Parallel batch processing with configurable job count
  • Privacy: 100% local processing, no network requests