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File Extensions

Browse file extensions by category or letter. Learn what each file type is used for and find software that can open, view, edit, or convert it.

38
Indexed file extensions

Find the right information for any file extension

Use this directory to look up file formats, understand what files are used for, and find compatible applications for Windows, macOS, Linux, mobile, and online tools.

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38 extensions
Letter: B Clear all
.BA2

Bethesda Archive 2 File

The BA2 format (Bethesda Archive 2) is a proprietary archive file format developed by Bethesda Game Studios for use with their Creatio…

Data
.BAK

Backup File

A BAK file is a backup file, a copy of data created as a safeguard in case the original data is lost or damaged. These files are commo…

Data
.BAK.OLD

Backup File

A .bak file is a backup file, a common extension used to denote a copy of data created for recovery purposes in case the original data…

Data
.BAM

Binary Alignment Map

The BAM (Binary Alignment Map) file format is the compressed binary version of the Sequence Alignment Map (SAM) format, designed speci…

Data
.BARCODE

Barcode Image

The term 'barcode' itself doesn't refer to a specific file format but rather to a visual representation of data that machines can read…

Image
.BAT

Batch File

A .BAT file is a batch file containing a series of commands to be executed by the command-line interpreter (usually cmd.exe) in Window…

Executable
.BAZEL

Bazel Build File

Bazel is an open-source build and test tool developed by Google, designed to handle large-scale software projects with high speed and…

Programming
.BCSTM

Binary Cafe Stream

The BCSTM file format, which stands for Binary Cafe Stream, is a proprietary audio file format developed by Nintendo. It is primarily…

Audio
.BCWAV

Nintendo 3DS Binary Compressed Wave

The BCWAV file format is a proprietary audio container developed by Nintendo specifically for the Nintendo 3DS handheld gaming console…

Audio
.BFSTM

Binary File Stream

The BFSTM (Binary File Stream) format is a proprietary audio container format developed by Nintendo, primarily used in games for the W…

Audio
.BFWAV

Binary File Waveform

The BFWAV file format is a proprietary audio container format primarily associated with Nintendo's internal audio engine, specifically…

Audio
.BGDM

Beat Saber Game Data Manager File

The BGDM file format (Beat Saber Game Data Manager) is a specialized data file primarily utilized within the modding community for the…

Data
.BGEM

Binary Geometry Exchange Model

The BGEM (.bgem) file format is a specialized binary format primarily used for storing highly optimized 3D geometry data. It is often…

Data
.BGSM

Bethesda Game Material File

The BGSM (Bethesda Game Material) file format is a proprietary data file used extensively by games built on the Bethesda Creation Engi…

Data
.BIG5

Big5 Traditional Chinese Text File

Big5 is a character encoding standard used for Traditional Chinese characters, predominantly in Taiwan, Hong Kong, and Macau. Develope…

Data
.BIL

Band Interleaved by Line

The .bil file extension represents a Band Interleaved by Line raster image file. This format is commonly used in remote sensing and ge…

Data
.BIN/CUE

BIN/CUE Image

The BIN/CUE file format is a disc image format commonly used for creating exact copies of CDs and DVDs. The BIN file contains the raw…

Data
.BINARY (.BIN)

Binary File

A .bin file is a generic binary file format used for storing data in a non-textual, machine-readable form. Unlike text files, binary f…

Data
.BIP

Binary Image Partition

A .bip file is a Binary Image Partition file, often associated with firmware images for embedded systems and devices. These files typi…

Data
.BISON

Bison Grammar File

A .bison file is a grammar specification file used by GNU Bison, a general-purpose parser generator that converts an annotated context…

Programming
.BKP

Backup File

A .bkp file is a generic file extension used to denote a backup copy of data. The specific content and format of a .bkp file can vary…

Data
.BLADE

Blade Template

The `.blade.php` file extension is used for Blade templates, which are a templating engine included with the Laravel PHP framework. Bl…

Programming
.BLEND

Blender Project File

A .blend file is the native file format used by Blender, a free and open-source 3D creation suite. It stores all the data necessary fo…

Data
.BME

Bitmap Editor Image

The BME file format is primarily associated with the Bitmap Editor software, a legacy graphics utility used for creating and editing r…

Image
.BA2

Bethesda Archive 2 File

The BA2 format (Bethesda Archive 2) is a proprietary archive file format developed by Bethesda Game Studios for use with their Creation Engine games, notably s…

Data
.BAK

Backup File

A BAK file is a backup file, a copy of data created as a safeguard in case the original data is lost or damaged. These files are commonly created automatically…

Data
.BAK.OLD

Backup File

A .bak file is a backup file, a common extension used to denote a copy of data created for recovery purposes in case the original data is lost or corrupted. Th…

Data
.BAM

Binary Alignment Map

The BAM (Binary Alignment Map) file format is the compressed binary version of the Sequence Alignment Map (SAM) format, designed specifically for storing large…

Data
.BARCODE

Barcode Image

The term 'barcode' itself doesn't refer to a specific file format but rather to a visual representation of data that machines can read. However, barcode images…

Image
.BAT

Batch File

A .BAT file is a batch file containing a series of commands to be executed by the command-line interpreter (usually cmd.exe) in Windows. These files are plain…

Executable
.BAZEL

Bazel Build File

Bazel is an open-source build and test tool developed by Google, designed to handle large-scale software projects with high speed and reliability. The .bazel e…

Programming
.BCSTM

Binary Cafe Stream

The BCSTM file format, which stands for Binary Cafe Stream, is a proprietary audio file format developed by Nintendo. It is primarily used in games developed f…

Audio
.BCWAV

Nintendo 3DS Binary Compressed Wave

The BCWAV file format is a proprietary audio container developed by Nintendo specifically for the Nintendo 3DS handheld gaming console. It is a variant of the…

Audio
.BFSTM

Binary File Stream

The BFSTM (Binary File Stream) format is a proprietary audio container format developed by Nintendo, primarily used in games for the Wii U and Nintendo 3DS con…

Audio
.BFWAV

Binary File Waveform

The BFWAV file format is a proprietary audio container format primarily associated with Nintendo's internal audio engine, specifically utilized in games develo…

Audio
.BGDM

Beat Saber Game Data Manager File

The BGDM file format (Beat Saber Game Data Manager) is a specialized data file primarily utilized within the modding community for the virtual reality rhythm g…

Data
.BGEM

Binary Geometry Exchange Model

The BGEM (.bgem) file format is a specialized binary format primarily used for storing highly optimized 3D geometry data. It is often associated with environme…

Data
.BGSM

Bethesda Game Material File

The BGSM (Bethesda Game Material) file format is a proprietary data file used extensively by games built on the Bethesda Creation Engine, notably Fallout 4, Sk…

Data
.BIG5

Big5 Traditional Chinese Text File

Big5 is a character encoding standard used for Traditional Chinese characters, predominantly in Taiwan, Hong Kong, and Macau. Developed in the mid-1980s by a c…

Data
.BIL

Band Interleaved by Line

The .bil file extension represents a Band Interleaved by Line raster image file. This format is commonly used in remote sensing and geographic information syst…

Data
.BIN/CUE

BIN/CUE Image

The BIN/CUE file format is a disc image format commonly used for creating exact copies of CDs and DVDs. The BIN file contains the raw binary data of the disc…

Data
.BINARY (.BIN)

Binary File

A .bin file is a generic binary file format used for storing data in a non-textual, machine-readable form. Unlike text files, binary files contain data represe…

Data
.BIP

Binary Image Partition

A .bip file is a Binary Image Partition file, often associated with firmware images for embedded systems and devices. These files typically contain a specific…

Data
.BISON

Bison Grammar File

A .bison file is a grammar specification file used by GNU Bison, a general-purpose parser generator that converts an annotated context-free grammar into a dete…

Programming
.BKP

Backup File

A .bkp file is a generic file extension used to denote a backup copy of data. The specific content and format of a .bkp file can vary significantly depending o…

Data
.BLADE

Blade Template

The `.blade.php` file extension is used for Blade templates, which are a templating engine included with the Laravel PHP framework. Blade provides a simple yet…

Programming
.BLEND

Blender Project File

A .blend file is the native file format used by Blender, a free and open-source 3D creation suite. It stores all the data necessary for a Blender project, incl…

Data
.BME

Bitmap Editor Image

The BME file format is primarily associated with the Bitmap Editor software, a legacy graphics utility used for creating and editing raster-based images. As a…

Image
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Frequently Asked Questions

Everything you need to know about file extensions

You can search by entering a file extension directly in the search bar or browse the directory by category or alphabetical index.

Each listing provides a definition of the file extension, common use cases, compatible software, supported platforms, and related or alternative formats.

The database is updated regularly to reflect new file extensions, changes in software compatibility, and evolving file format standards.