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 |
| .MOBI | Mobipocket eBook | 3.9 |
| .JWPUB | Jehovah's Witnesses Publication | 3.9 |
| .IBOOKS | Multi-Touch iBook | 3.9 |
| .AEP | Activ E-Book Project | 3.9 |
| .AZW3 | Amazon KF8 eBook File | 3.9 |
| .TR | TomeRaider 2 eBook File | 3.8 |
| .DNL | DNAML eBook File | 3.8 |
| .AZW4 | Amazon Print Replica eBook | 3.8 |
| .FB2 | FictionBook 2.0 File | 3.7 |
| .NCX | EPUB Navigation Control XML File | 3.7 |
| .RZS | Red Zion Security File | 3.7 |
| .YBK | YanCEyWare eBook | 3.7 |
| .LRS | Librie Reader Source File | 3.7 |
| .AZW | Amazon Kindle eBook File | 3.6 |
| .RZB | Red Zion Book File | 3.6 |
| .EBK | eBook Pro eBook File | 3.6 |
| .HAN | Amazon Kindle eBook Data File | 3.6 |
| .LIT | eBook File | 3.6 |
| .EPUB | Open eBook File | 3.6 |
| .MBP | Mobipocket Notes File | 3.5 |
| .HTZ5 | HyperMaker 5 Publication | 3.5 |
| .PRC | Mobipocket eBook File | 3.5 |
| .WEBZ | WEBZ Compressed eBook File | 3.5 |
| .NVA | NVA Document | 3.5 |
| .OPF | Open Packaging Format 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 |
| .ACSM | Adobe Content Server Message | 3.3 |
| .PHL | Kindle Popular Highlights File | 3.3 |
| .HTXT | Hanvon eBook File | 3.0 |
| .ORB | Original eBook Reader File | 3.0 |
| .HTZ4 | HyperMaker 4 Publication | 3.0 |
| .TR3 | TomeRaider eBook File | 3.0 |
| .BKK | BookBuddi eBook File | 3.0 |
| .CEBX | Apabi XML eBook File | 3.0 |
| .EDN | Adobe eBook Activation File | 3.0 |
| .AVA | AvaaBook eBook | 3.0 |
| .OEB | Open 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 |
| .TCR | Psion Series 3 eBook File | 2.7 |
| .POBI | Kindle Touch Periodical File | 2.7 |
| .AZW1 | Amazon Topaz eBook | 2.7 |
| .HTML0 | Book Designer File | 2.5 |
| .HTMLZ | Zipped HTML eBook | 2.4 |
| .KOOB | Koob E-Book File | 2.3 |
| .BPNUEB | PNU eBook File | 2.0 |
| .QMK | YanCEyDesktop Quickmarks File | 2.0 |
| .PEF | PEF Braille Book File | 2.0 |
| .OEBZIP | Zipped Open eBook File | 2.0 |
| .PMLZ | Zipped Palm Markup Language File | 2.0 |
| .FKB | Flipkart eBook File | 1.8 |
| .VBK | VitalSource eBook | 1.6 |
| .PML | Palm Markup Language File | 1.5 |