MOBI/AZW3 → Markdown
Converting a novel from Kindle / Mobipocket (.mobi, .azw3, .azw) to Markdown (.md) is a routine step in practice — Markdown is plain text, so any editor opens it and it versions cleanly. Going from Kindle / Mobipocket to Markdown does raise extra questions worth thinking about: you lose metadata such as title, author and language. Below we explain in detail how Kindle / Mobipocket becomes Markdown and what to watch out for, and the page ends with a converter that does the job right in your browser — nothing is uploaded, the file never leaves your machine.
What is MOBI/AZW3?
The Kindle family (.mobi, .azw3, .azw) is Amazon's proprietary e-book format. It reflows and can carry a table of contents, and it is read mainly on Kindle devices and the Kindle app, or delivered through Send to Kindle. AZW3 supports a reasonable amount of CSS while the older .mobi barely supports any. It is one of the most common proprietary formats in existing libraries — plenty of books bought or downloaded years ago are in it — which is why converting it to something more portable is such a practical need. Read the MOBI/AZW3 format guide
| Extensions | .mobi.azw3.azw |
|---|---|
| Typical use | Reading on Kindle devices and the Kindle app; one of the most common proprietary formats in existing libraries. |
What is Markdown?
Markdown is plain text plus markers (# headings, ** bold, | tables) — effectively a superset of .txt. Any text editor opens it, and it versions cleanly in Git. Its expressiveness is deliberately limited: no pagination, no headers or footers, no precise control over type size or position, and no complex layouts. Those trade-offs make Markdown an excellent authoring and conversion source, but as a final reading format its experience depends entirely on which app opens it. Read the Markdown format guide
| Extensions | .md |
|---|---|
| Typical use | Authoring, notes and technical docs; a clean intermediate format before converting to EPUB or TXT. |
How to convert MOBI/AZW3 to Markdown
.mobi/.azw3 are proprietary Amazon binary containers with no official parsing spec; third-party tools rely on reverse engineering and occasionally fail or drop metadata. AZW3 stores HTML internally, so extracting text is easier than preserving layout.
Markdown output keeps text and only the most basic hierarchy (# headings, paragraphs, simple lists). Pagination, headers and footers, comments, tracked changes, precise type sizes and text wrapping are all gone — it is a content archive, not a layout archive.
Metadata in the MOBI/AZW3 source — title, author, publisher, language, table of contents, cover — has nowhere to live in the target, so converting to Markdown loses all of it.
If you still want chapter navigation inside the Markdown file, a novel reader such as Tide Reader can split it automatically by recognising explicit chapter-heading lines in the text.
Convert MOBI/AZW3 to Markdown
KINDLE → MARKDOWN
The Kindle formats (.mobi, .azw3, .azw) are Amazon's proprietary binary containers with no public specification, so they cannot be reliably parsed or produced in a browser. This direction needs a desktop e-book tool; the EPUB or TXT you convert can be read in the Kindle app directly.
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Tide Reader opens TXT and EPUB, detects chapters on import, lays the text out the way you like it, and syncs your reading position across Windows, macOS, iOS and Android. Drop the converted file in and start reading.
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