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EPUB — Ebook Creation, Extraction & Enrichment
Expert-level EPUB handling for reading, writing, editing, and extracting knowledge from EPUB2 and EPUB3 files. Ships a CLI tool and five detailed references.
Why Install This Skill
When your agent loads this skill, it becomes an ebook format specialist who can:
- Inspect EPUB structure — see manifest, spine, TOC, metadata
- Extract clean text — per-chapter or single-file, stripped of boilerplate
- Edit EPUBs non-intrusively — metadata, chapters, spine, CSS — without breaking the file
- Create valid EPUBs from scratch — scaffold new ebooks
- Extract knowledge with LLM mode — facts, quotes, definitions, arguments via configurable LLM
- Convert EPUB2 to EPUB3 — add NAV, update namespace, keep NCX compatibility
- Batch process hundreds of EPUBs — wrap any script across file globs
- Validate against the spec — EPUBCheck or Python fallback
What You Get
| Directory | Purpose |
|---|---|
SKILL.md |
Decision table mapping tasks to scripts, EPUB format essentials |
scripts/ |
10 Python CLI scripts: info, text, scaffold, edit, images, batch, convert, validate, extract-knowledge |
references/ |
8 reference files: format internals, Python libraries, spec/validation, tutorials, fixed-layout, accessibility, media overlays |
Triggers
Load this when you encounter EPUB files — to read, create, edit, extract, convert, or validate them.
Requirements
Python 3.8+ with EbookLib. Optional: beautifulsoup4, epublib, Java (for EPUBCheck), and an LLM endpoint for knowledge extraction.
Quick Start
Start with the setup and first workflow in SKILL.md, then use the linked resources for the specific task you need to complete.