TXT to EPUB Builder

TXT to EPUB Builder is an offline Linux desktop authoring tool that converts plain
text and Markdown manuscripts into standards-compliant EPUB3 ebooks with custom
generated covers, clean typography stylesheets, and ZIP archive verification.

Key Features:
- Text & Markdown Chapter Splitter: Imports .txt and .md manuscripts with automatic
encoding detection (UTF-8, UTF-8-BOM, UTF-16, CP1252, CP1258) and splits chapters
using customizable regex presets (Chapter \d+, Chương \d+, Markdown headings, or
custom patterns) with live chapter outline and word counts.
- Cover Composer & Typography CSS: Generates custom cover artwork PNGs with Pillow,
edits ebook metadata (Title, Author, Language, Publisher, Series, Description),
and applies Novel Serif, Modern Clean, or Technical CSS presets.
- Valid EPUB3 Builder & Validator: Packages standards-compliant .epub archives with
mimetype stored first (ZIP_STORED), META-INF/container.xml, OEBPS/content.opf,
OEBPS/nav.xhtml, toc.ncx, and XHTML5 chapters, plus archive integrity checks.

Disclaimer: TXT to EPUB Builder is an independent open-source project by TC Studio and is not affiliated with, endorsed by, or sponsored by any third-party ebook publishing vendor.