Short answer
Each CC BY 4.0 EPUB 3.3 edition contains a table of contents, text-first chapters for 21 initials, 3 medials and 13 finals, Hanyu Pinyin and broad IPA correspondences, example characters and a short non-diagnostic practice guide. The package has no scripts, images, tracking, account, learner profile or child-data collection. Downloadable Readium manifest JSON and OPDS 2.0/1.2 catalog files describe the same English and Traditional Chinese acquisitions. Because static hosting may return generic JSON or XML HTTP Content-Types, URL-based ingestion by strict catalog clients is not claimed. EPUB support also varies by reading system, so the page provides SHA-256 metadata and recommends checking the target reader rather than promising universal rendering.
Download the edition that matches the reader language, open it in a current EPUB 3 reading app and confirm its navigation and Bopomofo font coverage. Use the online text edition if a device cannot render EPUB correctly. This is a symbol reference, not audio instruction, a pronunciation assessment or a complete Chinese course.
What to look for before choosing
- Complete 21-initial, 3-medial and 13-final coverage from one canonical 37-symbol dataset
- Separate English and Traditional Chinese EPUB 3.3 editions with deterministic bytes
- Text-first reading order, structural navigation and explicit accessibility metadata
- Downloadable Readium manifest JSON plus OPDS 2.0 and OPDS 1.2 catalog files
- CC BY 4.0, no account, scripts, tracking, external media or learner-data collection
A practical decision process
- Choose the English or Traditional Chinese edition for the reader.
- Download the EPUB without extracting it, or download the OPDS file and test import in a compatible catalog reader.
- Check the table of contents, reading order and Bopomofo glyph rendering on the target device.
- Use the matching online text edition if the reader lacks reliable EPUB 3 or font support.
- Pair the reference with fluent spoken models because a text-only book cannot assess pronunciation.
Quick comparison
| Need | What to check | Why it matters |
|---|---|---|
| Offline e-reader copy | EPUB 3.3 with all 37 symbols, navigation and no scripts or remote media | The book remains portable and usable without creating an account |
| Browser-accessible copy | Matching text-first Web Publication with a Readium manifest | Families can read the same reference when an EPUB app is unavailable |
| Library or catalog discovery | OPDS 2.0 JSON and OPDS 1.2 Atom feeds with open-access acquisitions and SHA-256 | Catalog tools that accept static JSON or XML can discover the exact bilingual files and verify their bytes |
Sources and resources
- Free Bopomofo EPUB 3.3 reference and OPDS catalog
- W3C EPUB 3.3 specification
- W3C EPUB Accessibility 1.1
- Readium Web Publication Manifest
- OPDS 2.0 specification
Where Lumi Bopomofo fits
Lumi Bopomofo is not required to download, read or reuse the open book. It appears after the free publication as an optional on-device activity layer for families who want more than a text reference.
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