eBook Files
eBook files are digital books designed to be viewed on eReaders, such as the Amazon Kindle, Sony Reader, Barnes and Noble Nook, and the iPad. However, they can often be viewed on a PC using eReader software as well. While many eBook formats can be viewed on multiple devices, some proprietary eBook formats can only be viewed using specific hardware or software.
Common eBook file extensions include .EPUB, .AZW, and .LIT.
| Extension | File Type | Popularity |
|---|---|---|
| .TPZ | Kindle Topaz eBook File | 4.6 |
| .MART | MartView eBook File | 4.5 |
| .APNX | Amazon Page Number Index File | 4.2 |
| .LRF | Sony Portable Reader File | 4.1 |
| .EA | Kindle End Actions File | 4.1 |
| .TK3 | TK3 Multimedia eBook | 4.0 |
| .JWPUB | Jehovah's Witnesses Publication | 4.0 |
| .IBOOKS | Multi-Touch iBook | 3.9 |
| .MOBI | Mobipocket eBook | 3.9 |
| .AEP | Activ E-Book Project | 3.9 |
| .TR | TomeRaider 2 eBook File | 3.8 |
| .NCX | EPUB Navigation Control XML File | 3.8 |
| .DNL | DNAML eBook | 3.8 |
| .AZW3 | Amazon KF8 eBook File | 3.8 |
| .FB2 | FictionBook 2.0 File | 3.7 |
| .LRS | Librie Reader Source File | 3.7 |
| .RZS | Red Zion Security File | 3.7 |
| .YBK | YanCEyWare eBook | 3.7 |
| .OPF | FlipViewer FlipBook File | 3.7 |
| .LIT | eBook File | 3.6 |
| .RZB | Red Zion Book File | 3.6 |
| .AZW4 | Amazon Print Replica eBook | 3.6 |
| .EBK | eBook Pro eBook File | 3.6 |
| .CEB | Apabi eBook File | 3.6 |
| .HAN | Amazon Kindle eBook Data File | 3.6 |
| .EPUB | Open eBook | 3.5 |
| .NVA | NVA Document | 3.5 |
| .HTZ5 | HyperMaker 5 Publication | 3.5 |
| .OPF | Open Packaging Format File | 3.5 |
| .PRC | Mobipocket eBook File | 3.5 |
| .WEBZ | WEBZ Compressed eBook File | 3.5 |
| .MBP | Mobipocket Notes File | 3.5 |
| .CBC | Comic Book Collection | 3.4 |
| .AZW | Amazon Kindle eBook File | 3.3 |
| .LRX | Sony Portable Reader File | 3.3 |
| .KFX | Amazon KF10 eBook File | 3.3 |
| .PHL | Kindle Popular Highlights File | 3.3 |
| .ACSM | Adobe Content Server Message | 3.3 |
| .TCR | Psion Series 3 eBook File | 3.3 |
| .HTZ4 | HyperMaker 4 Publication | 3.0 |
| .AVA | AvaaBook eBook | 3.0 |
| .TR3 | TomeRaider eBook File | 3.0 |
| .HTXT | Hanvon eBook File | 3.0 |
| .OPZ | Zipped FlipViewer FlipBook | 3.0 |
| .OEB | Open eBook File | 3.0 |
| .CEBX | Apabi XML eBook File | 3.0 |
| .EDN | Adobe eBook Activation File | 3.0 |
| .ORB | Original eBook Reader File | 3.0 |
| .SNB | Shanda Bambook eBook | 2.9 |
| .ETD | Adobe Reader EBX Transfer Data File | 2.8 |
| .HTML0 | Book Designer File | 2.8 |
| .EAL | Kindle End Actions File | 2.8 |
| .AZW1 | Amazon Topaz eBook | 2.7 |
| .POBI | Kindle Touch Periodical File | 2.7 |
| .HTMLZ | Zipped HTML eBook | 2.4 |
| .KOOB | Koob E-Book File | 2.3 |
| .VBK | VitalSource eBook | 2.0 |
| .BPNUEB | PNU eBook File | 2.0 |
| .OEBZIP | Zipped Open eBook File | 2.0 |
| .PEF | PEF Braille Book File | 2.0 |
| .QMK | YanCEyDesktop Quickmarks File | 2.0 |
| .FKB | Flipkart eBook File | 1.8 |
| .BKK | BookBuddi eBook | 1.5 |
| .PMLZ | Zipped Palm Markup Language File | 1.5 |
| .PML | Palm Markup Language File | 1.3 |