| aeh | Archos Reader Ebook |
| apnx | Amazon Kindle eBook Index |
| ascm | Adobe Content Server Message |
| ava | AvaaPlayer AvaaBook eBook |
| azn | Amazon Kindle Newspaper Data |
| azw | Amazon Kindle eBook |
| azw1 | Amazon Kindle Topaz eBook |
| azw3 | Amazon Kindle Format 8 Ebook |
| azw3f | Amazon Kindle Ebook Metadata |
| azw3r | Amazon Kindle Format 8 Ebook Metadata |
| azw4 | Amazon Print Replica eBook |
| azw6 | Amazon Kindle Ebook |
| bek | Shanda Bambook BEK eBook |
| bfl | yBook E-book Data |
| bkc | IBM Library Server Bookcase File |
| bki | IBM Library Server Bookshelf Index File |
| bkk | BookBuddi eBook |
| bks | IBM Library Server Bookshelf File |
| bpnueb | PNU eBook |
| brn | yBook Compiled E-book |
| caj | China Academic Journals Document |
| cb7 | 7-ZIP Compressed Comic Book |
| cba | ACE Compressed Comic Book |
| cbc | Comic Book Collection |
| cbds | Comic Book DS Document |
| cbr | RAR Compressed Comic Book |
| cbt | TAR Compressed Comic Book |
| cbz | ZIP Compressed Comic Book |
| dnl | DNAML E-book |
| ea | Amazon Kindle End Announcement |
| ebk | eBook Pro eBook |
| ebktml | eBook Pro Encoded Temporary Data |
| ebo | Microsoft Reader E-Book Annotations |
| ebt | Adobe Acrobat Ebook Document |
| ebx | Adobe Reader Electronic Book Exchange File |
| edb | Adobe Photoshop Extended Digital Book |
| embp | Mobipocket E-book Encrypted Auxiliary Data |
| enews | Mobipocket Reader eNews Data |
| epub | Open eBook Document |
| etbz | eTextbookViewer Compressed Textbook |
| ewriter | eWriter eBook |
| fb2 | FictionBook 2 E-Book |
| fkb | Flipkart eBook File |
| fub | Franklin Universal Binary E-book |
| hsb | HandStory Suite eBook |
| htmlz | Zipped HTML eBook |
| htxt | Hanvon WISEreader eBook |
| htz4 | HyperMaker Publication |
| iba | Apple iBooks Author Ebook |
| ibatemplate | Apple iBooks Author Ebook Template |
| ibook | iBooks E-book |
| ibooks | Apple iBooks Document |
| ipef | iPublisherCentral eBook |
| kcb | Kindle Create Book |
| kcr | Kindle Cloud Reader Ebook |
| kdh | China Academic Journals KDH Document |
| kfx | Kindle v10 KFX Ebook |
| kfx-zip | Compressed Kindle KFX Ebook |
| kml | Hiebook Reader Ebook |
| koob | Koober E-Book |
| kpf | Kindle Create Publishable Book |
| lit | Microsoft Reader E-Book Document |
| lmb | LenMus eBook |
| lrf | Sony BBeB E-Book |
| lrs | Sony BBeB E-Book Source |
| mart | MartView eBook |
| mbp1 | Amazon Kindle Touch Annotations Data |
| mbpkg | Mobipocket Reader Package |
| mbpv2 | Amazon Kindle Annotations Data |
| mpub | Mobcast Mobile Optimized ePub Book |
| nat | Natata eBook Compiler Document |
| ncx | EPUB Navigation Control XML |
| nh | China Academic Journals NH Document |
| nva | NVA eBook Document |
| oebzip | Zipped Open eBook |
| opf | Open Electronic Package Ebook |
| pdb | Plucker Ebook |
| pdg | SSReader Digital Book |
| pef | Portable Embosser Format Book |
| phl | Amazon Kindle Public Highlights Data |
| pkg | Apple Newton eBook |
| pml | Palm Markup Language File |
| pmlz | Compressed Palm Markup Language File |
| pobi | Kindle Touch Periodical Data |
| prc | Mobipocket Reader E-Book |
| qmk | YanceyDesktop Quickmarks File |
| rb | Rocket eBook |
| rzb | Red Zion Book |
| rzn | Red Zion Notes |
| sbrz | Sky Ebook Reader Encrypted Ebook |
| seb | Franklin eBookMan E-book |
| smbp | Mobipocket E-book Secured Auxiliary Data |
| snb | Shanda Bambook eBook |
| stk | STAReBOOK Ebook |
| sva | Manga Browser Comic |
| tcr | Psion Series 3 Ebook |
| tcr | TCR E-book |
| tebr | Tiny eBook Reader Ebook |
| tk3 | TK3 E-Book |
| tpz | Amazon Topaz E-book |
| tr | TomeRaider 2 E-book |
| tr3 | TomeRaider 3 E-book |
| txtc | Compressed eBook Text |
| txtz | ZIP Compressed Text Ebook |
| ubk | Embiid Reader eBook |
| updb | cBook Ebook |
| vbk | VitalBook eBook |
| webi | Web Book Internal Format eBook |
| webz | WEBZ Compressed eBook |
| wmga | Web Manga Document |
| wol | WOLF eBook |
| wolf | WOLF Document |
| xeb | Apabi eBook |
| xks | IBM Softcopy Reader PDF Extended Bookshelf File |
| ybhtm | yBook E-book HTML Document |
| ybk | Yanceyware eBook |
| ybrar | yBook E-book Archive |
| ybrtf | yBook E-book RTF Document |
| ybtxt | yBook E-book Text Document |
| yjf | Kindle v10 KFX Ebook Metadata |
| zte | E-Tabs Format E-book |
| zub | Zubu Reader Magazine |