Feature Parity Matrix
📂 Format Support
Section titled “📂 Format Support”| Feature | 🚀 ebook-rs (v0.16.4) |
📦 epub.js |
📖 foliate-js |
🦀 rbook |
|---|---|---|---|---|
| EPUB 2 & 3 Support | ✅ Full OPF + NCX/NAV | ✅ Yes | ✅ Yes | ✅ Yes |
| EPUB 3 Fixed-Layout (FXL) | ✅ 2-page spread renderer | ✅ Yes | ✅ Yes | ❌ No |
| Amazon KFX (KF10) | ✅ Clean-room b"CONT" container |
❌ No | ✅ Yes | ❌ No |
| MOBI & AZW3 (KF8) | ✅ Native PalmDOC LZ77 | ❌ No | ✅ Yes | ❌ No |
| FB2 (FictionBook 2) | ✅ Native XML + xlink:href | ❌ No | ✅ Yes | ❌ No |
| KEPUB (Kobo EPUB) | ✅ Native | ❌ No | ✅ Yes | ❌ No |
| LIT (Microsoft Reader) | ✅ Native | ❌ No | ✅ Yes | ❌ No |
| CBZ (Comic Book ZIP) | ✅ Native ZIP Images | ❌ No | ✅ Yes | ❌ No |
| PDF 2-Column Reflow | ✅ pdf_oxide spatial reflow |
❌ No | ❌ No | ❌ No |
| DOCX (Microsoft Word) | ✅ Native WordML | ❌ No | ❌ No | ❌ No |
| RTF (Rich Text Format) | ✅ Native Control Words | ❌ No | ❌ No | ❌ No |
🧭 Navigation & AI Features
Section titled “🧭 Navigation & AI Features”| Feature | 🚀 ebook-rs (v0.16.4) |
📦 epub.js |
📖 foliate-js |
🦀 rbook |
|---|---|---|---|---|
| Model Context Protocol (MCP) | ✅ Built-in Stdio & HTTP Server | ❌ No | ❌ No | ❌ No |
| Okapi BM25 RAG Chunking | ✅ rank_chunks_bm25() |
❌ No | ❌ No | ❌ No |
| SIMD Full-Text Search | ✅ SIMD memchr scanning | ❌ No | ✅ Basic | ❌ No |
| IDPF CFI Engine | ✅ Parse / format / compare / range | ✅ Yes | ✅ Yes | ✅ Yes |
| TTS Word Synchronizer | ✅ Word token span offsets | ❌ No | ❌ No | ❌ No |
| Readium LCP DRM | ✅ Full License Parser | ❌ No | ✅ Yes | ❌ No |