Home : File Types : CFB File

.CFB File Extension

File TypeCompound Binary File

3.0 (1 Vote)
CategoryData Files

What is a CFB file?

A CFB file is a compound file that contains a structured file system. It is used to store objects, such as directories and multiple files, within a single file. Storage objects are used to represent directories and stream objects are used to represent files. A CFB file may also include metadata about the application that created the file.

More Information

Microsoft OLE applications, such as Office and Digital Image programs commonly use CFB files. OLE is a framework developed by Microsoft that enables applications to embed and link to documents and other objects. In other words, it enables a user to add data to a document from another application. An example is an image editor sending an image to a word processor.

CFB files are saved in the Compound File Binary Format (CFB or CFBF), a general purpose file format used to store data for OLE applications. It stores data in a file structure similar to the FAT file system and is divided into header, FAT, DIFAT, MiniFAT, Directory, Stream, and Range Lock sectors.

The structure of a CFB file provides efficient access to specific data within the file. For example, a single storage or stream object stored in the file may be accessed without needing to load the entire file. However, CFB files can grow large in size and may cause performance issues if there is not enough storage available.

NOTE: A CFB file is also known as an Object Linking and Embedding (OLE) Compound File (CF) (OLECF).

Open over 300 file formats with File Viewer Plus.

Programs that open CFB files

Updated 4/1/2017

About CFB Files

Our goal is to help you understand what a file with a *.cfb suffix is and how to open it.

The Compound Binary file type, file format description, and Windows programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and only publish information about file formats that we have tested and validated.

If you would like to suggest any additions or updates to this page, please let us know.