List of filename extensions / B
This list contains common file name extensions that are used in some operating systems to differentiate between file formats . In other operating systems, file type identification is mainly carried out using the file header, and the MIME type is more important than the file name extension for e-mail attachments . Systems that use the latter two approaches usually ignore the extension completely.
| Filename extension | MIME type | Full name | Remarks, usage |
|---|---|---|---|
| .b | Applause batch list | - | |
| .b | Score | Saved game of GTA III - GTA Vice City - GTA San Andreas | |
| .b & w, .b_w | B lack & W hite | 1st Reader, Atari , and Macintosh monochrome bitmaps | |
| .b1n | - | 1st reader monochrome, color bitmaps | |
| .b30 | printer font | ABC Ventura Publisher printer font | |
| .b4 | Helix nuts and bolts | - | |
| .b5t | Blind Write 5 | - | |
| .b64 | B ase 64 file | Compressed (?) Base64 archive file | |
| .b8 | Raw graphic | Piclab Plane II image file | |
| .bacpac | Bac kup Pac kage | Artifact for exporting the schema and the data of a database from Microsoft SQL Server | |
| .bath | Oracle bad | - | |
| .bath | - | Backup file from "scanreg \ fix" under Windows | |
| .bag | BAG archive | Compressed file archive | |
| .bak | Ba c k up file | Safety copy ("backup") of a file | |
| .bal | Ball lade Music score | ||
| .Bank | Music files, e.g. B. used in games like Ghost Recon Advanced Warfighter. | VLC media player | |
| .bar | Horizontal menu object | DBASE application generator | |
| .bas | Bas ic (source code) | BASIC source code file | |
| .bat | Bat ch | Batch file | |
| .bb | Papyrus Database backup | - | |
| .bb | Blitz Basic | Blitz Basic source code | |
| .bbl | B i bl iographic reference | TeX / BibTeX | |
| .bbm | Deluxe Paint Bitmap image | Image files | |
| .bbs | B ulletin B oard S ystem text | - | |
| .bc! | B ittorrent- C lient file | Incomplete Bitlord file (popular BitTorrent client ) | |
| .bch | B at ch Process Object | DBASE application generator | |
| .bch | Data file | Datalex Entry Point 90 | |
| .bcm | Communications file | Microsoft Works | |
| .bco | Bitstream outline font description | - | |
| .bcp | Makefile | Borland C ++ ( B Orland C P lusplus) | |
| .bcw | Environment settings | Borland C ++ 4.5 | |
| .bdb | Database | Microsoft Works | |
| .bdf | Egret data file | - | |
| .bdf | West Point B ridge D esigner F ile | - | |
| .bdf | B irth d ay F ile | birthday reminder | |
| .bdf | Binary Diff File | Binary Diff (Atari) | |
| .bdl | Bundle file (2D and 3D CAD drawing) | CoCreate CAD | |
| .bdm | Index file that contains information about a video (AVCHD) | Sony cameras | |
| .bdr | B or d e r | Microsoft Publisher | |
| .bdsproj | B orland D eveloper S tudio Proj ect | Used by Borland Developer Studio until 2006 | |
| .bez | Bitstream outline font description | - | |
| .bf | B rain f uck | Brainfuck , an esoteric programming language | |
| .bf2 | B radford 2 F ont | - | |
| .bfc | Microsoft Windows 95 B rie fc ase Document | Briefcase Document | |
| .bfe | B low f ish e NCrypted | From the encryption program Bcrypt | |
| .bfm | Font Metrics file | Unix / mainframe | |
| .bfs | FlatOut 2 bfs file | contains game files from FlatOut 2 | |
| .bfx | Fax document file | B it F a x | |
| .bg | Microsoft B ack g ammon Game | - | |
| .bga | OS / 2 graphic array | - | |
| .bgi | Borland Graphics Interface Driver | Drivers for Pascal and some other Borland languages | |
| .bgl | Microsoft Flight Simulator Scenery | - | |
| .bra | B lacquer h ole | compressed file | |
| .bhf | pcAnywhere Host file | - | |
| .bhx | WinZip file | WinZip file | |
| .bi | bi nary | Binary file | |
| .bi | B asic I nclude file | Visual Basic Classic for DOS | |
| .bib | Bib liography file | ASCII | |
| .bib | - | Database | |
| .bib | Literature database (bibliography) | TeX , BibTeX | |
| .bif | GroupWise initialization file | - | |
| .bif | Binary image b & w graphic | Image capture board | |
| .biff | XLITE 3D file | - | |
| .bik | bink video | Bink Video File | |
| .bin | application / mac-binary, application / macbinary, application / octet-stream, application / x-binary, application / x-macbinary, |
binary (file) | Binary , various benefits (eg. Images with CD -Inhalten or firmware - updates ) |
| .bio | OS / 2 bios file | - | |
| .bit | X11 bitmap | Image files; Start pictures for the Lyra - MP3 player | |
| .bk | Backup | Backup copy of a file | |
| .bk | JetFax Faxbook file | - | |
| .bk! | Document backup | WordPerfect for Windows | |
| .bk $ | Backup | Backup copy of a file | |
| .bk1,…, .bk9 | Document backup | WordPerfect for Windows: Backup for windows 1… 9 | |
| .bkf | Backup format | Windows own backup program NTBackup | |
| .bkp | Backup | TurboVidion Dialog Designer | |
| .bks | bookshelf file | IBM BookManager Read | |
| .bks | Spreadsheet backup | Microsoft Works | |
| .bkw | FontEdit Fontset mirror image | - | |
| .blb | Resource archive | DreamWorks, Neverhood | |
| .bld | BASIC Bloadable picture | - | |
| .blend | Blender3D | Blender3D file | |
| .blend1, .blend2, ... | - | Blender3D backup files (backup versions) | |
| .blib | WorkBench ++ for C-Control I | Library file | |
| .blk | Alias Wavefront Image | - | |
| .blk | - | Amiga IFF | |
| .blk | Temporary file | WordPerfect for Windows | |
| .bluej | BLUEJ file | BlueJ package | |
| .bm | image / bmp | bitmap | X11 bitmap |
| .bm1 | Apogee BioMenace data | - | |
| .bmf | Corel Gallery file | - | |
| .bmk | Windows Help bookmark | Windows Help file bookmarks (.hlp) | |
| .bmp | image / bmp, image / x-windows-bmp | bitmap | Alpha Microsystems Bitmap (image file) |
| .bmp | image / bmp, image / x-windows-bmp | bitmap | OS2 bitmap (image file) |
| .bmp | image / bmp, image / x-windows-bmp | bitmap | Windows Bitmap (image file) |
| .bmt | Ami Pro Button | - | |
| .bmx | - | Animations (Siemens) | |
| .bmx | BlitzMax | BlitzMax source code | |
| .bn | Instrument Bank file | AdLib | |
| .bnk | Instrument Bank file | AdLib | |
| .bnk | Sound effects bank file | Electronic Arts | |
| .bnp | backup for inp files | Help file for Sony cameras | |
| .bol | Compressed archive library | Microsoft Booasm.arc | |
| .bom | Bill of materials | OrCAD Schematic Capture, also other EDA programs | |
| .bom | Bill of materials | Apple installer | |
| .boo | application / book | Compressed archive | Microsoft Booasm.arc |
| .book | application / book | Book | Adobe FrameMaker |
| .bos | Optimized binary file | Microsoft Robotis Studio | |
| .box | Lotus Notes file | - | |
| .bpc | Business plan toolkit chart | - | |
| .bpl | Borland Delphi 4 packed library | - | |
| .bpl | Business Navigator file | Business plan software | |
| .bpr | Backup Project | Project file of the file backup program TrayBackup | |
| .bpr | Borland project file | - | |
| .bpp | WorkBench ++ for C-Control I | Project file | |
| .bps | Microsoft Works Document | - | |
| .bpt | CorelDraw Bitmap fills file | - | |
| .bpx | Truevision Targa bitmap | Image file | |
| .bqy | BrioQuery file | - | |
| .br | Bridge Script | - | |
| .brd | board | Cadence Allegro PCB layout file | |
| .brd | board | Eagle layout file | |
| .brk | Brooktrout fax mail file | - | |
| .brush | DPaint graphic file | Brush information | |
| .brw | - | Use in credit institutions | |
| .brx | - | File for browsing multimedia configurations | |
| .brz | DbBRZ | Database backup | |
| .bs_ | Find Menu shell extension | Microsoft Bookshelf | |
| .bs1 | Apogee Blake Stone file | - | |
| .bsa | BSARC Compressed archive | Compressed file archive | |
| .bsb | - | Compressed card format of MapTech and NOAA uses | |
| .bsc | Apple II Compressed archive | Compressed file archive | |
| .bsc | Fortran Pwbrmake Object | - | |
| .bsc | browser information | MS Developer Studio | |
| .E.g | Quake Engine Map file | QRadiant / Valve Hammer Editor | |
| .bst | BiblioTex file | BiblioTex bibliography file for TeX | |
| .btm | (not self-modifying) batch file (batch-to-memory) | JP Software 4DOS, 4OS, 4NT, Take Command, TC, also Norton Utilities etc., compatible with .bat, only faster to run | |
| .btn | Makeover Button File | - | |
| .btr | Btrieve database | Btrieve 5.1 | |
| .bud | Backup disk for Quicken | - | |
| .bug | - | File for bugs and problems | |
| .bun | CakeWalk Audio Bundle | MIDI program | |
| .bup | B ack up | - | |
| .but | Button definition | - | |
| .buy | - | Movie file | |
| .bv1,…, .bv9 | - | WordPerfect for Windows: Overflow file for documents 1… 9 | |
| .bw | SGI Black and White image | Image files (color information also possible) | |
| .bwb | Spreadsheet application | Visual baler | |
| .bwi | BlindWrite Image | Raw data image created with BlindWrite | |
| .bwr | Kermit Beware buglist | - | |
| .bws | Sub-Code BlindWrite | Configuration file for BlindWrite image | |
| .bwt | Blindread image | CD image created with Blindread | |
| .bwv | Business wave file | - | |
| .byu | BYU Movie | - | |
| .bz | application / x-bzip | bzip | compressed file (Unix) |
| .bz2 | application / x-bzip2 | Bzip2 | compressed file |