MOBI converters

MOBI is the Mobipocket e-book format, which Amazon bought in 2005 and used for the first Kindle devices. A MOBI file holds simple HTML with images, compressed in a Palm database container. Amazon has since replaced it with KF8 (AZW3) and KFX, and Send to Kindle no longer accepts MOBI files, but many older books and downloads still come as .mobi.

Convert MOBI

• EPUB → MOBIConvert EPUB to MOBI
• MOBI → EPUBConvert MOBI to EPUB
• MOBI → PDFConvert MOBI to PDF

What to know about MOBI

• Old Kindle books bought from Amazon use the .azw extension; they are MOBI files, usually with DRM.
• MOBI supports only basic formatting: no embedded fonts, little CSS and no fixed-layout pages.
• Many .mobi files made by KindleGen also contain a KF8 (AZW3) version of the same book.
• Text is compressed with PalmDOC (LZ77) or Huffman coding and split into 4 KB records.

File extensions: .mobi, .prc, .azw