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 | 3.9 |
| .MOBI | Mobipocket eBook | 3.9 |
| .AEP | Activ E-Book Project | 3.9 |
| .IBOOKS | Multi-Touch iBook | 3.9 |
| .AZW3 | Amazon KF8 eBook File | 3.9 |
| .TR | TomeRaider 2 eBook File | 3.8 |
| .DNL | DNAML eBook File | 3.8 |
| .OPF | FlipViewer FlipBook File | 3.8 |
| .FB2 | FictionBook 2.0 File | 3.7 |
| .NCX | EPUB Navigation Control XML File | 3.7 |
| .RZS | Red Zion Security File | 3.7 |
| .LRS | Librie Reader Source File | 3.7 |
| .YBK | YanCEyWare eBook | 3.7 |
| .LIT | eBook File | 3.6 |
| .AZW4 | Amazon Print Replica eBook | 3.6 |
| .RZB | Red Zion Book File | 3.6 |
| .EBK | eBook Pro eBook File | 3.6 |
| .HAN | Amazon Kindle eBook Data File | 3.6 |
| .EPUB | Open eBook File | 3.5 |
| .OPF | Open Packaging Format File | 3.5 |
| .WEBZ | WEBZ Compressed eBook File | 3.5 |
| .PRC | Mobipocket eBook File | 3.5 |
| .NVA | NVA Document | 3.5 |
| .HTZ5 | HyperMaker 5 Publication | 3.5 |
| .MBP | Mobipocket Notes File | 3.5 |
| .AZW | Amazon Kindle eBook File | 3.5 |
| .CEB | Apabi eBook File | 3.5 |
| .KFX | Amazon KF10 eBook File | 3.4 |
| .CBC | Comic Book Collection | 3.4 |
| .LRX | Sony Portable Reader File | 3.3 |
| .PHL | Kindle Popular Highlights File | 3.3 |
| .ACSM | Adobe Content Server Message | 3.3 |
| .OEB | Open eBook File | 3.0 |
| .EDN | Adobe eBook Activation File | 3.0 |
| .AVA | AvaaBook eBook | 3.0 |
| .ORB | Original eBook Reader File | 3.0 |
| .BKK | BookBuddi eBook File | 3.0 |
| .HTZ4 | HyperMaker 4 Publication | 3.0 |
| .CEBX | Apabi XML eBook File | 3.0 |
| .TR3 | TomeRaider eBook File | 3.0 |
| .OPZ | Zipped FlipViewer FlipBook | 3.0 |
| .HTXT | Hanvon eBook File | 3.0 |
| .SNB | Shanda Bambook eBook | 2.9 |
| .ETD | Adobe Reader EBX Transfer Data File | 2.8 |
| .EAL | Kindle End Actions File | 2.8 |
| .HTML0 | Book Designer File | 2.8 |
| .POBI | Kindle Touch Periodical File | 2.7 |
| .AZW1 | Amazon Topaz eBook | 2.7 |
| .TCR | Psion Series 3 eBook File | 2.7 |
| .HTMLZ | Zipped HTML eBook | 2.4 |
| .KOOB | Koob E-Book File | 2.3 |
| .PEF | PEF Braille Book File | 2.0 |
| .BPNUEB | PNU eBook File | 2.0 |
| .QMK | YanCEyDesktop Quickmarks File | 2.0 |
| .OEBZIP | Zipped Open eBook File | 2.0 |
| .FKB | Flipkart eBook File | 1.8 |
| .VBK | VitalSource eBook | 1.7 |
| .PML | Palm Markup Language File | 1.5 |
| .PMLZ | Zipped Palm Markup Language File | 1.5 |