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Private Kindle ebook tool

AZW3 to EPUB Converter

Convert an unencrypted KF8/AZW3 ebook into a clean EPUB 3 package entirely in the browser.

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

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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 an unencrypted KF8/AZW3 ebook into a clean EPUB 3 package entirely in the browser.

The EPUB preserves readable chapter content and recoverable images, but Kindle-specific CSS, embedded fonts, fixed layouts, dictionaries, and navigation details can require manual cleanup.

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

  • KF8/AZW3 parsing
  • EPUB 3 package
  • Chapter-order recovery
  • Local image repackaging

Useful for

  • Read an owned AZW3 elsewhere
  • Recover an ebook manuscript
  • Create an editable EPUB copy
  • Archive a DRM-free Kindle file

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 preserves readable chapter content and recoverable images, but Kindle-specific CSS, embedded fonts, fixed layouts, dictionaries, and navigation details can require manual cleanup.

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