v1.3.1

microsoft/markitdownv1.3.1Feb 6, 2026by denizsafak

AI Summary

This is a major update introducing a Flask-based Web UI, a comprehensive EPUB 3 packaging pipeline, and significant architectural reorganization.

Key Highlights

New Flask-based Web UI (abogen-web)
EPUB 3 packaging pipeline with media-overlay support
GPU-accelerated Supertonic TTS engine
Multi-voice audio support with speaker roles

New Features

Web UI for Docker and headless deployments
EPUB 3 packaging pipeline
Supertonic TTS engine with GPU acceleration
Entity analysis and pronunciation override system
Speaker/role assignment for multi-voice audiobooks
Calibre OPDS and Audiobookshelf integration

Full Release Notes

- Special thanks to [@jeremiahsb](https://github.com/jeremiahsb) for his [massive contribution](https://github.com/denizsafak/abogen/pull/120) (>55k lines!) that brought the Web UI, EPUB 3 pipeline, and core architectural improvements to life.
- Added an EPUB 3 packaging pipeline that builds media-overlay EPUBs from generated audio and chunk metadata.
- Persisted chunk timing metadata in job artifacts and exercised the exporter with automated tests.
- Added Flask-based Web UI (`abogen-web`) for Docker and headless server deployments.
- Reorganized codebase to support both PyQt6 desktop GUI and Web UI from a shared core.
- Added Supertonic TTS engine support with GPU acceleration.
- Added entity analysis and pronunciation override system for proper nouns.
- Added speaker/role assignment for multi-voice "theatrical" audiobooks.
- Added Calibre OPDS and Audiobookshelf integration.

Update:
```
uv tool update abogen
```