.BOOK File Extension

iBooks Author Document

Developer Apple
3.1  |  25 Votes

What is a BOOK file?

Book design project created by iBooks Author, a program used for authoring digital books for the Apple iPad; stores the sections and chapters of an iBook; can be exported to the .IBOOKS format and directly uploaded to an iPad, or may be published to the Apple iBookstore using the .ITMSP format.

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iBook Author documents can also be exported to .PDF and .TXT (plain text) formats for reading on the local computer or other devices.

NOTE: iBooks Author uses the .IBA file extension as the default extension for iBooks designs. However, it also supports the ".book" extension for designs.

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Programs that open BOOK files

BookSmart Book File

Developer Blurb Software
3.2  |  9 Votes

A BOOK file may also be a book created by BookSmart, a free tool used to create photo books, notebooks, and planners. It contains the pages of a book, which includes text, images, and layout settings. BOOK files are saved in an XML format.

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Screenshot of a .book file in Blurb BookSmart 3.4
BOOK file open in Blurb BookSmart 3.4

The BOOK file is the main file type associated with BookSmart. When you save a book project, the program creates the BOOK file to store the contents. You can choose books with different page layouts, such as wedding album, cookbook, guestbook, notebook, and yearbook. You can also choose from different themes that include photo borders and page backgrounds with coordinating colors. If you want to back up or share your BOOK file you can export the project as a .BOOKEXPORT file.

To create a BOOK file, select File → New → Book Project. You can save a BOOK file by selecting File → Save. Once you save the BOOK file, BookSmart will automatically save the file and any edits you make going forward.

Programs that open BOOK files


FrameMaker Book File

Developer Adobe Systems
3.2  |  6 Votes

A BOOK file may also be a book created by FrameMaker, a program used to generate books and other large documents. It stores references to FrameMaker documents (.FM and .MIF files), which can contain chapters, appendixes, table of contents, and other books. FrameMaker allows users to compile a book from smaller document subparts.

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NOTE: When you rename files referenced in a BOOK file, FrameMaker also renames the referenced files on disk. This is because FrameMaker books contain links to the actual FrameMaker documents on the computer's hard drive.

Programs that open BOOK files


Budget In Brief Book File

Developer Budget In Brief
3.2  |  5 Votes

File used by Budget In Brief, a program used for generating budget documents; saved using XML formatting and contains document generation properties; also includes references to input budget data files and the output document templates; can be used to generate Microsoft Word .DOCX files and .PDF documents.

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Budget In Brief supports several different document types for creating the output budget reports. These formats include .DOC, .DOCX, .RTF, .HTML, and .ODT. The program can also accept input data sources from Microsoft Excel .XLSX files and .XML files.

NOTE: BOOK files are currently created using a plain text editor, such as Microsoft Notepad, or an XML editor. Budget In Brief is no longer available for download.

Programs that open or reference BOOK files

Budget In Brief
Included with OS

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