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 | 4.3 |
| .APNX | Amazon Page Number Index File | 4.2 |
| .LRF | Sony Portable Reader File | 4.1 |
| .EA | Kindle End Actions File | 4.1 |
| .LRS | Librie Reader Source File | 4.0 |
| .TR | TomeRaider 2 eBook File | 4.0 |
| .TK3 | TK3 Multimedia eBook | 4.0 |
| .IBOOKS | Multi-Touch iBook | 3.9 |
| .MOBI | Mobipocket eBook | 3.9 |
| .AZW3 | Amazon KF8 eBook File | 3.9 |
| .AEP | Activ E-Book Project | 3.9 |
| .JWPUB | Jehovah's Witnesses Publication | 3.8 |
| .DNL | DNAML eBook File | 3.8 |
| .FB2 | FictionBook 2.0 File | 3.8 |
| .AZW4 | Amazon Print Replica eBook | 3.8 |
| .RZS | Red Zion Security File | 3.7 |
| .YBK | YanCEyWare eBook | 3.7 |
| .RZB | Red Zion Book File | 3.6 |
| .EBK | eBook Pro eBook File | 3.6 |
| .EPUB | Open eBook File | 3.6 |
| .HAN | Amazon Kindle eBook Data File | 3.6 |
| .LIT | eBook File | 3.6 |
| .NCX | EPUB Navigation Control XML File | 3.6 |
| .AZW | Amazon Kindle eBook File | 3.5 |
| .CEB | Apabi eBook File | 3.5 |
| .HTZ5 | HyperMaker 5 Publication | 3.5 |
| .MBP | Mobipocket Notes File | 3.5 |
| .KFX | Amazon KF10 eBook File | 3.5 |
| .PRC | Mobipocket eBook File | 3.5 |
| .WEBZ | WEBZ Compressed eBook File | 3.5 |
| .NVA | NVA Document | 3.5 |
| .CBC | Comic Book Collection | 3.4 |
| .OPF | Open Packaging Format File | 3.4 |
| .LRX | Sony Portable Reader File | 3.3 |
| .ACSM | Adobe Content Server Message | 3.3 |
| .PHL | Kindle Popular Highlights File | 3.3 |
| .HTZ4 | HyperMaker 4 Publication | 3.0 |
| .BKK | BookBuddi eBook File | 3.0 |
| .CEBX | Apabi XML eBook File | 3.0 |
| .AVA | AvaaBook eBook | 3.0 |
| .OEB | Open eBook File | 3.0 |
| .ORB | Original eBook Reader File | 3.0 |
| .EDN | Adobe eBook Activation File | 3.0 |
| .TR3 | TomeRaider 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 |
| .POBI | Kindle Touch Periodical File | 2.7 |
| .TCR | Psion Series 3 eBook File | 2.7 |
| .AZW1 | Amazon Topaz eBook | 2.7 |
| .HTML0 | Book Designer File | 2.5 |
| .HTXT | Hanvon eBook 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 |