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Informations about the package epub-markdown
epub-markdown
Convert EPUB books to clean Markdown. Spine-ordered chapters, metadata,
a level-1 outline, and a pluggable HTML converter — with zero dependencies
beyond ext-zip and ext-dom.
Built for retrieval pipelines (chunking, embedding, search) where you want deterministic, embedding-friendly markdown rather than a pixel-perfect round trip.
Install
Use
Failures throw FounderplusLabs\EpubMarkdown\Exceptions\InvalidEpub with a
human-readable message that is safe to surface in a UI.
Bring your own converter
If your corpus already speaks a markdown dialect, keep it — one dialect per corpus beats a prettier stranger:
The callable receives each chapter's inner <body> HTML and returns markdown.
Pairs well with league/html-to-markdown
Need a richer dialect — nested lists, tables, code blocks? Plug in league/html-to-markdown, the ecosystem standard:
The built-in converter stays the default because it is dependency-free and deterministic — but the seam is there when you want more.
Laravel
No service provider needed — it is a plain class. Construct it where you need it, or bind it once:
Design notes
- Nothing is extracted to disk. Entries are read from the zip in memory, so zip-slip is structurally impossible.
- Hostile XML is inert. The container and OPF are parsed with
LIBXML_NONETand without entity substitution — a malicious book cannot reach the network or read local files through its manifest. - Nav documents are excluded. Table-of-contents chrome
(
properties="nav") never pollutes the content. - The default converter is deliberately lite: headings, paragraphs, lists, blockquotes, emphasis, links, horizontal rules, images-as-alt-text. Everything else is stripped to text. EPUB chapter XHTML routinely carries doctypes and HTML entities that make strict XML parsing miserable; a regex pass over a tame dialect is more robust than a DOM here.
Test
Fixtures are built at runtime (an EPUB is just a zip) — the repo carries no binaries.
License
MIT © Founderplus
All versions of epub-markdown with dependencies
ext-zip Version *
ext-dom Version *
ext-libxml Version *