Windows
Support Guide

Applies to: Microsoft Windows (All versions)
Home Find file extension (eg.: .doc,.png)

File extension?

A file extension is a suffix to the name of a computer file, which defines and determines easily the file's generic type. In Windows and DOS operating system file extension is a requirement whereas, in some other operating system such as UNIX it is optional. Usually the file extension consists of two, three or four characters following a period.
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Recently updated file extensions

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Find file extension (eg.: .pdf)

.b - Data file type

.b&w - Image file type

.b_w - Image file type

.b30 - Font file type

.b3d - Miscellaneous file type

.b4f - Miscellaneous file type

.b4s - Document file type

.B4U - Miscellaneous file type

.b5i - Miscellaneous file type

.b5l - Miscellaneous file type

.b5t - Miscellaneous file type

.b64 - Archive file type

.b6i - Miscellaneous file type

.b6l - Miscellaneous file type

.b6t - Miscellaneous file type

.b8 - Graphic file type

.ba - Miscellaneous file type

.ba8 - Miscellaneous file type

.bac - Backup file type

.backup - Miscellaneous file type

.bad - Database file type

.badongo - Video file type

.bak - Backup file type

.bal - Source code and script files

.balz - Miscellaneous file type

.ban - Miscellaneous file type

.bap - Miscellaneous file type

.bar - Data file type

.bas - Source code and script files

.bat - Executable file type

.bat_aq - Miscellaneous file type

.batch-doc2doc - Miscellaneous file type

.batch-ppt2ppt - Miscellaneous file type

.batch-wordzip - Miscellaneous file type

.batch-xls2xls - Miscellaneous file type

.batx - Miscellaneous file type

.bau - Miscellaneous file type

.bax - Miscellaneous file type

.bay - Miscellaneous file type

.bb - Source code and script files

.BB3 - Game file type

.bbd - Miscellaneous file type

.bbk - Game file type

.bbl - Text file type

.bbm - Image file type

.bbp - Miscellaneous file type

.bbs - Internet related file type

.bc! - Internet related file type

.bcard - Miscellaneous file type

.bcc - Source code and script files

.bcd - Miscellaneous file type

.bcf - Miscellaneous file type

.bch - Miscellaneous file type

.bck - Backup file type

.bcl - Miscellaneous file type

.bco - Font file type

.bcp - Source code and script files

.bcpkg - Miscellaneous file type

.bcproj - Miscellaneous file type

.bcss - Miscellaneous file type

.bct - Graphic file type

.bcw - Miscellaneous file type

.bd - Miscellaneous file type

.bdb - Miscellaneous file type

.bdc - Text file type

.bdcm - Miscellaneous file type

.bdcr - Miscellaneous file type

.bdf - Data file type

.bdg - Miscellaneous file type

.bdm - Temporary Files

.bdmv - Video file type

.bdo - Miscellaneous file type

.bdp - Miscellaneous file type

.bdr - Text file type

.BDSDEPLOY - Miscellaneous file type

.BDSGROUP - Miscellaneous file type

.BDSPROJ - Miscellaneous file type

.bdt - Source code and script files

.bejeweled2deluxeSav...dll - Miscellaneous file type

.bel - Miscellaneous file type

.bes - Miscellaneous file type

.bez - Font file type

.bf2 - Database file type

.bfc - Miscellaneous file type

.bfg - Miscellaneous file type

.bfl - Miscellaneous file type

.bfm - Font file type

.bfr - Miscellaneous file type

.bfx - Text file type

.bga - Image file type

.bgcf - Miscellaneous file type

.bgeo - Miscellaneous file type

.bgg - Miscellaneous file type

.bgi - Configuration file type

.bgl - Miscellaneous file type

.BGM - Source code and script files

.bgo - Miscellaneous file type

.bgs - Miscellaneous file type

.bh - Archive file type

.bhx - Archive file type

.bi - Binary file type

.bib - Text file type

.bie - Miscellaneous file type

.bif - Game file type

.biff - Data file type

.big - Graphic file type

.bik - Video file type

.bin - Disk Image file type

.bin_ - Miscellaneous file type

.bio - System file type

.bip - Miscellaneous file type

.bit - Game file type

.bitmap - Miscellaneous file type

.bix - Video file type

.biz - Data file type

.bjf - Miscellaneous file type

.bjo - Audio file type

.bk - Data file type

.bk! - Backup file type

.bk1 - Miscellaneous file type

.bk2 - Miscellaneous file type

.bk3 - Miscellaneous file type

.bkc - Miscellaneous file type

.bkf - Game file type

.bkn - Backup file type

.bkp - Backup file type

.bks - Backup file type

.bkw - Font file type

.bkwf - Miscellaneous file type

.blackhawkstriker2Sa...dll - Miscellaneous file type

.blb - Database file type

.bld - Graphic file type

.blend - Graphic file type

.blf - Miscellaneous file type

.blg - Text file type

.blk - Data file type

.block - System file type

.blogthis - Miscellaneous file type

.blp - Miscellaneous file type

.blt - Text file type

.blw - Miscellaneous file type

.bm - Image file type

.bm2 - Graphic file type

.bm3 - Backup file type

.bmf - Miscellaneous file type

.bmi - Miscellaneous file type

.bmj - Miscellaneous file type

.bmk - System file type

.bmo - Miscellaneous file type

.bmp - Image file type

.bmp;*.jpg - Miscellaneous file type

.bmp24 - Miscellaneous file type

.bmpskin - Miscellaneous file type

.bmr - Miscellaneous file type

.bms - Miscellaneous file type

.bmt - Text file type

.bn4 - Miscellaneous file type

.bna - Text file type

.bnf - Miscellaneous file type

.bnk - Game file type

.bnr - Miscellaneous file type

.bobthebuilderSavedG...dll - Game file type

.boe - Miscellaneous file type

.bof - Miscellaneous file type

.bok - Data file type

.bom - Data file type

.boo - Archive file type

.book - Miscellaneous file type

.boot - Data file type

.BOOTSKIN - Graphic file type

.bop - Miscellaneous file type

.box - Data file type

.bp1 - Miscellaneous file type

.bpc - Miscellaneous file type

.bpd - Data file type

.bpdx - Miscellaneous file type

.bpf - Miscellaneous file type

.bpg - Miscellaneous file type

.bpi - Miscellaneous file type

.bpk - Miscellaneous file type

.bpl - Binary file type

.bpLib - Miscellaneous file type

.bpm - Miscellaneous file type

.bpn - Backup file type

.bpoly - Binary file type

.bpp - Backup file type

.bpr - Miscellaneous file type

.bprc - Miscellaneous file type

.bps - Miscellaneous file type

.bpt - Configuration file type

.bpx - Image file type

.bqy - Miscellaneous file type

.br - Data file type

.br5 - Miscellaneous file type

.brb - Miscellaneous file type

.brc - Miscellaneous file type

.brd - Data file type

.bre - Miscellaneous file type

.bri - Email related file type

.brk - Graphic file type

.brl - Miscellaneous file type

.brm - Miscellaneous file type

.bro - Miscellaneous file type

.brp - Graphic file type

.brt - Miscellaneous file type

.bru - Miscellaneous file type

.brw - Data file type

.brx - Miscellaneous file type

.bs - Graphic file type

.bs2 - Source code and script files

.bsa - Game file type

.bsb - Game file type

.bsc - Miscellaneous file type

.bsf - Miscellaneous file type

.bsi - Miscellaneous file type

.bsk - Miscellaneous file type

.bsp - Game file type

.bss - Miscellaneous file type

.bst - Data file type

.bsx - Miscellaneous file type

.bsy - Miscellaneous file type

.bsz - Miscellaneous file type

.bt - Miscellaneous file type

.btd - Text file type

.btg - Miscellaneous file type

.bti - Miscellaneous file type

.BTK - Miscellaneous file type

.btm - Executable file type

.btn - Image file type

.btsearch - Data file type

.btt - Internet related file type

.btw - Miscellaneous file type

.btx - Miscellaneous file type

.buc - Backup file type

.bufr - Miscellaneous file type

.bug - Miscellaneous file type

.buildalot3savedgame - Game file type

.bumptheme - Miscellaneous file type

.bumpwidget - Miscellaneous file type

.bun - Archive file type

.bup - Backup file type

.bus - Miscellaneous file type

.but - Internet related file type

.buy - Data file type

.bvd - Miscellaneous file type

.bvf - Miscellaneous file type

.bvn - Miscellaneous file type

.bvp - Miscellaneous file type

.bvr - Miscellaneous file type

.bw - Image file type

.bwb - Miscellaneous file type

.bwf - Miscellaneous file type

.bwi - Disk Image file type

.bwp - Data file type

.bwr - Miscellaneous file type

.bws - Miscellaneous file type

.bwt - Disk Image file type

.bwz - Miscellaneous file type

.bxd - Miscellaneous file type

.byu - Video file type

.bz - Archive file type

.bz2 - Archive file type

.bza - Archive file type

.bzb - Miscellaneous file type

.bzs - Miscellaneous file type

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