LucadenFree online toolsBrowse toolsPrivate Kindle ebook tool
Recover the embedded cover or thumbnail image from a DRM-free MOBI or AZW3 ebook without uploading the book.
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How it works
Important
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
Recover the embedded cover or thumbnail image from a DRM-free MOBI or AZW3 ebook without uploading the book.
Some files declare only a thumbnail or no cover at all. The extracted image is the packaged asset and may differ from a store or device-library thumbnail.
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.
Questions
No. Parsing, extraction, sanitization, and packaging run in temporary browser memory.
No. Lucaden does not remove or bypass DRM. Use only unencrypted ebooks you own or are authorized to process.
Some files declare only a thumbnail or no cover at all. The extracted image is the packaged asset and may differ from a store or device-library thumbnail.
Open-source foundations
Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.