| 1 | AZW | Amazon | Amazon Kindle EBook Format |
| 2 | AZW1 | Amazon | Amazon Topaz EBook |
| 3 | AZW3 | Amazon | Amazon KF8 EBook Format |
| 4 | AZW4 | Amazon | Amazon Print Replica EBook |
| 5 | AZW6 | N/A | Amazon Kindle eBook |
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| 6 | CB7 | N/A | Comic Book 7-Zip Archive |
| 7 | CBDS | Nicom00k | Comic Book DS Format |
| 8 | CBR | N/A | Comic Book Archive Format Or ComicBook Reader Format |
| 9 | CBT | Microsoft | CDisplay TAR Comic Book Format |
| 10 | EPUB | IDPF | Open EBook Format |
| 11 | FB2 | FictionBook | FictionBook 2.0 Format |
| 12 | HTMLZ | N/A | Zipped HTML EBook |
| 13 | IBOOK | N/A | Generic |
| 14 | IBOOKS | Apple | Multi-Touch IBook |
| 15 | KF8 | N/A | Amazon Kindle Format 8 |
| 16 | LIT | Microsoft | EBook Format |
| 17 | MGA | Manga Reader | Manga Document |
| 18 | MOBI | Amazon | Mobipocket EBook |
| 19 | OPF | IDPF | Open Packaging Format |
| 20 | PDF | Adobe Systems | Portable Document Format |
| 21 | PMLZ | Palm | Zipped Palm Markup Language Format |
| 22 | POBI | N/A | Kindle Touch Periodical Format |
| 23 | TPZ | Amazon | Kindle Topaz EBook Format |
| 24 | WBP | AG, Inc. | Webshots Image |
| 25 | WMGA | Manga Reader | Web Manga Document |
| 26 | YBHTM | Spacejock Software | YBook HTML |
