What does the JSON report contain?

Per-file analysis of the binary you upload — the PalmDB container fields, embedded MOBI record layout, and any signatures binwalk finds in the file.

Can I read the book text here?

No. This page reports the ebook's binary structure as JSON; it is not an ebook reader.

Why not a plain text extraction?

MOBI files are PalmDOC/PDB containers with compressed sections, so JSON gives a faithful structural view of the data without pretending the book is a flat text file.

Analyze a MOBI ebook as JSON

MOBI (Mobipocket) ebooks are not plain text. They are PalmDB databases whose records hold PalmDOC-compressed HTML plus an EXTH metadata block (title, author, publisher, and so on). This page analyzes that structure and returns it as JSON.

How to inspect a MOBI file

Upload a .mobi ebook up to 40 MB.
Press Convert file.
Read the JSON report of the container's structure on the result page.

Why binwalk? The stable qpdf binary reads PDF files only and cannot open a MOBI. binwalk parses the binary layout of any file, so it is the honest tool for turning a MOBI's structures into JSON.

What you get

The report reflects what is actually stored in your file:

The PalmDB header (type/creator keys, record count)
The embedded MOBI record sections
Any embedded signatures binwalk recognizes

When this is useful

You received a .mobi that software refuses to open and want to understand why
You are debugging an ebook's container structure
You want a machine-readable record of what is really inside the file