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 |
| .EWRITER | eWriter Book | 4.4 |
| .APNX | Amazon Page Number Index File | 4.2 |
| .EA | Kindle End Actions File | 4.1 |
| .TK3 | TK3 Multimedia eBook | 4.0 |
| .JWPUB | Jehovah's Witnesses Publication | 4.0 |
| .LRF | Sony Portable Reader File | 3.9 |
| .IBOOKS | Multi-Touch iBook | 3.9 |
| .AEP | Activ E-Book Project | 3.9 |
| .MOBI | Mobipocket eBook | 3.9 |
| .DNL | DNAML eBook | 3.8 |
| .NCX | EPUB Navigation Control XML File | 3.8 |
| .AZW3 | Amazon KF8 eBook File | 3.8 |
| .FB2 | FictionBook 2.0 File | 3.7 |
| .RZS | Red Zion Security File | 3.7 |
| .LRS | Librie Reader Source File | 3.7 |
| .LIT | eBook File | 3.6 |
| .TR | TomeRaider 2 eBook File | 3.6 |
| .RZB | Red Zion Book File | 3.6 |
| .CEB | Apabi eBook File | 3.6 |
| .OPF | FlipViewer FlipBook File | 3.6 |
| .YBK | YanCEyWare eBook | 3.6 |
| .HAN | Amazon Kindle eBook Data File | 3.6 |
| .EPUB | EPUB eBook | 3.5 |
| .PRC | Mobipocket eBook File | 3.5 |
| .PHL | Kindle Popular Highlights File | 3.5 |
| .OPF | Open Packaging Format File | 3.5 |
| .NVA | NVA Document | 3.5 |
| .HTZ5 | HyperMaker 5 Publication | 3.5 |
| .WEBZ | WEBZ Compressed eBook File | 3.5 |
| .MBP | Mobipocket Notes File | 3.5 |
| .CBC | Comic Book Collection | 3.4 |
| .EBK | eBook Pro eBook File | 3.4 |
| .KFX | Amazon KF10 eBook File | 3.3 |
| .LRX | Sony Portable Reader File | 3.3 |
| .ACSM | Adobe Content Server Message | 3.3 |
| .AZW | Amazon Kindle eBook File | 3.3 |
| .TCR | Psion Series 3 eBook File | 3.3 |
| .AZW4 | Amazon Print Replica eBook | 3.2 |
| .CEBX | Apabi XML eBook File | 3.0 |
| .OPZ | Zipped FlipViewer FlipBook | 3.0 |
| .TR3 | TomeRaider eBook File | 3.0 |
| .ORB | Original eBook Reader File | 3.0 |
| .HTXT | Hanvon eBook File | 3.0 |
| .EDN | Adobe eBook Activation File | 3.0 |
| .OEB | Open eBook File | 3.0 |
| .HTZ4 | HyperMaker 4 Publication | 3.0 |
| .AVA | AvaaBook eBook | 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 |
| .PMLZ | Zipped Palm Markup Language File | 2.7 |
| .HTMLZ | Zipped HTML eBook | 2.5 |
| .KOOB | Koob E-Book File | 2.3 |
| .PML | Palm Markup Language File | 2.3 |
| .VBK | VitalSource eBook | 2.0 |
| .OEBZIP | Zipped Open eBook File | 2.0 |
| .QMK | YanCEyDesktop Quickmarks File | 2.0 |
| .BPNUEB | PNU eBook File | 2.0 |
| .PEF | PEF Braille Book File | 2.0 |
| .FKB | Flipkart eBook File | 1.8 |
| .BKK | BookBuddi eBook | 1.5 |