MOBI
A proprietary binary ebook format originally developed by Mobipocket and later used in early Amazon Kindle publishing and reading workflows.
General information
- Format name
- Mobipocket File Format
- Extensions
.mobi.prc- MIME type
application/x-mobipocket-ebook- Category
- document
- Data type
- Binary
- Developer
- Mobipocket SA
- Introduced
- 2000
Common uses
Legacy ebooks
Early Kindle books
Reflowable digital books
Ebook distribution
Archived ebook collections
Format identifiers
- PRONOM
fmt/396- Media type
application/x-mobipocket-ebook
Related formats
Technical resources
| Resource | Publisher | Link |
|---|---|---|
| Mobipocket File Format | Library of Congress | Open resource ↗ |
Record information
- Verified
- October 4, 2026
- Last updated
- October 4, 2026