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MOBI to EPUB

MOBI, AZW or PRC in; an EPUB with the chapters, pictures and metadata out.

More free conversions, where you upload. The Fylane extension does the same work inside any upload form, on its own free share every day.About the extension

How to convert MOBI to EPUB

  1. Drop the .mobi, .azw, .azw3 or .prc file.
  2. Nothing to choose.
  3. Press Convert and download the EPUB.

What happens to your file

The Palm database is opened, the PalmDOC-compressed text records are inflated back into the book’s HTML, pictures are lifted from their records, and the book is written as an EPUB 3 with a navigation document — chapter breaks where the MOBI had page breaks.

An AZW3 that carries a MOBI 7 part (Calibre’s usual output) converts cleanly; a KF8-only AZW3 is read best effort, words intact and layout rough, and the metadata says so. A DRM-locked book is refused.

Questions

Kindle books I bought?

Only if they are DRM-free: a locked book is refused, not cracked.

Old HUFF/CDIC-compressed MOBIs?

Not yet; the metadata names it when it happens. Calibre still reads those.

Do this in code

curl -X POST https://api.fylane.dev/v1/jobs \
  -H "Authorization: Bearer $FYLANE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "file_id": "<file id>",
    "operation": "ebook.convert",
    "options": {
      "format": "epub"
    }
  }'

The same operation, ebook.convert — EPUB to Kindle MOBI, or MOBI / AZW / AZW3 to EPUB (`format`), both shapes read and written in-house: chapters, pictures, title, author and language kept; a KF8-only AZW3 read best effort. Upload first with the quickstart; every option is on the operations page. 500 free credits a month, then $5 per thousand.