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    IT Management 6 min read

    Letter B: Data Formats & File Extensions

    Find data formats and their file extensions starting with B.

    With literally thousands of data file formats employed by Windows and Window-based apps, keeping track of all the file extensions employed by your software applications and programs can be quite a challenge. Fortunately, Webopedia’s Complete List of Data File Formats and File Extensions makes it quick and easy to sift through thousands of file extensions and data file formats to find exactly what you need. You can peruse the full list or search for data formats and file extensions based on the letter they start with from the table below.

    Data File Formats that Begin with the Letter ‘B’

    .b Batch list (APPLAUSE)
    .b&w Black and white graphics (atari – mac)
    .b~k backup file
    Mono binary screen image (1st Reader)
    .b00 CD Image Segment file
    .b16 PCO Graphic file
    .b1n Both mono and color binary screen image (1st Reader)
    .b1s Booksmith
    .b30 Printer font (JLaser – Cordata) (Ventura Publisher)
    .b3d 3D Builder file
    .b5i Blindwrite 5 Disk Image file
    .b5t Blindwrite 5 Image Information file
    .b6i Blindwrite 6 Disk Image file
    .b6t Blindwrite 6 Image Information file
    .b8 Raw graphics (one byte per pixel) plane two (PicLab)
    .b_w Black and white graphics (atari – mac)
    .bad Bad file (Oracle)
    .bag PMMail Mail Index file
    OS/2 Netfinity Manager Sysinfo file
    AOL Instant Messenger file
    .backup Ad-Aware Reference file
    .bak Backup file
    .bal Music score (Ballade)
    .ban Sierra Print Artist Banner
    .bar Horizontal bar menu object file (dBASE Application Generator)
    .bas Basic source code file
    Microsoft Visual Basic class module
    .bat Batch file (DOS)
    .bb Database backup (Papyrus)
    .bba Settler IV Archive file
    .bbl Bibliographic reference (TeX/BibTeX)
    .bbm Brush (Deluxe Paint)
    .bbs Bulletin Board System announce or text info file
    .bc! Bitcomet Incompleted Download file
    .bcf ConfigSafe Snapshot index
    Belarc Advisor Content File
    The Sims (Maxis) File
    .bch Batch process object file (dBASE Application Generator)
    Datafile (Datalex EntryPoint 90)
    .bck Backup
    .bcm MS Works Communications file
    .bcn Business Card Pro Design
    .bco Outline font description (Bitstream)
    .bcp Borland C++ makefile
    .bct Business Card Designer template
    .bcw Environment settings (Borland C++ 4.5)
    .bde Borland Database Engine
    .bdf Bitmap Distribution Format font file (X11)
    Datafile (Egret)
    .bdm AVCHD Index file
    .bdmv Blu-ray information file
    .bdr Border (MS Publisher)
    .bez Outline font description (Bitstream)
    .bf2 Bradford 2 font
    .bff Binary file format
    .bfm Font metrics (unix/Frame)
    .bfs Tivoli Storage Manager file
    .bfx Fax (BitFax)
    .bga Bitmap graphics
    .bgt Quicken 2002 Internet Common File
    .bgi Borland Graphics Interface device driver
    .bgl Flight Simulator scenery file
    .bgt Quicken 2002 Internet Common File
    .bib Bibliography (ASCII)
    Database – not compatible with TeX format (Papyrus)
    Literature database (TeX/BibTeX)
    .bic Civilization III Scenario
    .bid BidMaker 2002 file
    .bif Binary Image Format b&w graphics (Image Capture board)
    .bik BioCharter Profile backup file
    Bink Game video file
    .bin Binary file
    .bio OS/2 BIOS
    .bip Free-motion capture files for character studio biped
    .bit Bitmap Image
    Worms Armageddon Imported Map
    Worms World Party Imported Map
    .bk Faxbook (JetFax)
    .bk! Document backup (WordPerfect for Win)
    .bk1 Timed backup file for document window 1 (WordPerfect for Win)
    .bk2 Timed backup file for document window 2 (WordPerfect for Win)
    .bk3 Timed backup file for document window 3 (WordPerfect for Win)
    .bk4 Timed backup file for document window 4 (WordPerfect for Win)
    .bk5 Timed backup file for document window 5 (WordPerfect for Win)
    .bk6 Timed backup file for document window 6 (WordPerfect for Win)
    .bk7 Timed backup file for document window 7 (WordPerfect for Win)
    .bk8 Timed backup file for document window 8 (WordPerfect for Win)
    .bk9 Timed backup file for document window 9 (WordPerfect for Win)
    .bkf Microsoft Backup file
    .bkg Background file
    UWXAFS Binary Format Data file
    .bkp Backup file (Write – TurboVidion DialogDesigner)
    .bkw Mirror image of font set (FontEdit)
    .blb DreamWorks Resource Archive
    .bld Bloadable picture (BASIC)
    .blend Blender 3D file
    .blf Windows Registry Recovery file
    Bantec Scanner Driver file
    .blg Binary Performance Log File
    .blk Temporary file (WordPerfect for Win)
    Lightscape Block Library
    Alias Wavefront Image
    VersaPro Block
    .blob Steam Archive file
    .blt Saved AIM Buddy List file
    Wordperfect for DOS file
    .bm Bitmap graphics
    .bmf Corel Image file
    .bmi 3ds max Executable
    .bmk Help Bookmarks (Windows 3.x)
    .bmp Bitmap graphics (PC Paintbrush – many)
    .bmx Buzz music file
    .bnd Typequick file
    .bndl Bundle file
    .bnk Adlib instrument bank file
    .bob BobDown Downloading Program
    Bob Raytracer
    .bom MicroSim PCBoard Bill of Materials
    Orcad Schematic Capture Bill of Materials file
    Softshare Delta Business Object Model
    .boo Compressed file ASCII archive created by BOO (msbooasm.arc)
    .book Adobe FrameMaker Book
    HTMLDOC document
    .bot Linkbot file
    .box Myriad Jukebox file
    Notes Mailbox
    .bpc Chart (Business Plan Toolkit)
    .bpl Delphi Library
    .bpt Bitmap fills file (CorelDRAW)
    .bqy BrioQuery file
    .br Script (Bridge)
    .brd Eagle Layout file
    .brf Braille ASCII file
    .brk Fax (Brooktrout Fax-Mail)
    .brn BornoSoft Bangla2000 (a Bengali word processor) File extension
    .bro Tree Professional Broadleaf Creator file
    .brp Tree Professional Broadleaf Creator image
    .brt Micrografx Picture Publisher file
    .brx Multimedia browsing index
    .bsa Compressed file archive created by BSARC
    .bsb MapInfo Sea Chart
    SWAT Sub-basin Output file
    .bsc Compressed Apple II file archive created by BINSCII
    Database (Source Browser)
    Pwbrmake object file (MS Fortran)
    .bsdl Boundary Scan Description Language
    .bsl BSPlayer Configuration file
    .bsp Half-life/TFC/CS Map
    Quake Map
    .bst BibTeX Style file
    .bsv Bluespec System Verilog file
    .bt! BitTorrent Partial Download file
    .btm Batch To Memory batch file (4DOS)
    .btn Buttonware file
    .bto Baytex Organix! 2001 Language Kit
    .btr Btrieve Database file
    MS Frontpage-related file
    .btx DB/TextWorks Database Term & Indexes
    .bud Quicken Backup
    .bug Bugs and Problems
    .bun Bundled Audio files
    .bup DVD Backup file
    .but Button definitions (Buttons!)
    .buy Datafile format (movie)
    .bv1 Overflow file below insert point in Doc 1 (WordPerfect for Win)
    .bv2 Overflow file below insert point in Doc 2 (WordPerfect for Win)
    .bv3 Overflow file below insert point in Doc 3 (WordPerfect for Win)
    .bv4 Overflow file below insert point in Doc 4 (WordPerfect for Win)
    .bv5 Overflow file below insert point in Doc 5 (WordPerfect for Win)
    .bv6 Overflow file below insert point in Doc 6 (WordPerfect for Win)
    .bv7 Overflow file below insert point in Doc 7 (WordPerfect for Win)
    .bv8 Overflow file below insert point in Doc 8 (WordPerfect for Win)
    .bv9 Overflow file below insert point in Doc 9 (WordPerfect for Win)
    .bwa BlindWrite Disk Image Information file
    .bwb Spreadsheet application (Visual Baler)
    .bwi Blindread/Blindwrite
    .bwr Beware (buglist) (Kermit)
    .bws Blindwrite Sub Channel Data File
    .bwt Blindread/Blindwrite
    .bxx blaxxun Contact
    .bz2 Bzip 2 UNIX Compressed file

    Recommended Reading: An Introduction to Data File Formats and Their File Extensions

    This article was last updated on April 13, 2012