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Private Kindle ebook tool

MOBI to EPUB Converter

Convert a DRM-free legacy MOBI ebook into a clean EPUB 3 package with chapter order, metadata, navigation, and recoverable images.

Free to use Your DRM-free MOBI or AZW3 ebook stays in this browser and is never uploaded to Lucaden.

Loading tool workspace…

How it works

Complete the job in three clear steps

  1. Choose a DRM-free MOBI or AZW3 ebook from this device.
  2. Let the pinned browser parser read its metadata and chapter structure locally.
  3. Review the result and download the generated text, HTML, EPUB, report, or cover file.

Important

Check the result before relying on it

Keep an untouched copy of important source files. Browser processing depends on available device memory, and you should inspect every downloaded result before deleting the original.

Practical details

What this Lucaden tool does

Convert a DRM-free legacy MOBI ebook into a clean EPUB 3 package with chapter order, metadata, navigation, and recoverable images.

The EPUB is a standards-based reconstruction, not a byte-identical Calibre conversion. Complex Kindle styling, fonts, page maps, dictionaries, fixed layouts, and interactive features can change.

Lucaden uses the MIT-licensed foliate-js parser at an immutable GitHub commit for legacy MOBI and KF8/AZW3 input. TinyWow is credited only as a feature-parity reference; its application code is not copied.

Included capabilities

  • Legacy MOBI parsing
  • EPUB 3 package
  • Chapter-order recovery
  • Local image repackaging

Useful for

  • Move an old ebook to a modern reader
  • Archive a public-domain MOBI
  • Create an editable EPUB copy
  • Migrate an owned manuscript

Questions

About this tool

Does Lucaden upload my Kindle ebook?

No. Parsing, extraction, sanitization, and packaging run in temporary browser memory.

Can it open an Amazon purchase protected by DRM?

No. Lucaden does not remove or bypass DRM. Use only unencrypted ebooks you own or are authorized to process.

What should I verify after conversion?

The EPUB is a standards-based reconstruction, not a byte-identical Calibre conversion. Complex Kindle styling, fonts, page maps, dictionaries, fixed layouts, and interactive features can change.

Keep going

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Open-source foundations

Built transparently

Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.

foliate-js MOBI/KF8 parserMIT runtime pinned to commit 78914aef sourcefflateMIT runtime 0.8.2 sourceJSZipMIT runtime sourceDOMPurifyApache-2.0 or MPL-2.0 runtime sourceTinyWowFeature-parity reference; no code copied sourceThird-party noticesLicenses and attribution