EbookConverter

EbookConverter wraps gryf/ebook-converter (a Calibre fork) to run natively on Android via Chaquopy.

Features:

- Convert between popular ebook formats (epub, mobi, azw3, docx, fb2, …) directly on your phone

- Auto input: epub, mobi, azw3, docx, odt, fb2, html, htmlz, lrf, pdb, rtf, txt, md, markdown, pdf, kfx

- Auto output: epub, kfx, mobi, azw3, docx, fb2, htmlz, lrf, md, txt, txtz

- Settings for Auto, Calibre, or direct boko conversion, with backend-specific format choices

- Auto combines Calibre and boko through intermediate EPUBs for KFX input and KFX/Markdown output

- Direct boko input: epub, kfx, azw3, mobi; output: epub, kfx, azw3, md

- Cancel conversions and discard temporary batch outputs without changing original books

- Clear all selected books or tap session history to select them again

- Output profiles for Kindle, Kobo, Nook, iPad, and generic e-ink devices

- Metadata editing (title, authors, publisher)

- Font size and margin controls

- Dark mode support

- No internet required — all conversion runs locally

Limitations:

- PDF input supports text-based PDFs only (scanned PDFs need OCR, unavailable on Android)

- PDF output not supported

- Calibre mode has no KFX input or KFX/Markdown output; direct boko mode has no Calibre conversion options

Licensed under GPL-3.0.