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N - O - P - Q - R - S - T - U - V - W - X - Y - Z -
OTHER - Allowedchars in file names - what is an extension?
graphical file formats - Potentially harmful extensions contributors
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Universal dump utility for non-destructive dump/list/string search etc dump.zip
Q = Win95 fax queue Q&A = Questions and answersQ0 = Japanese Q0 bitmap image (24bit)Q1 = Winamp fileQ3D = Quickdraw 3D fileQ3X = PCD0501,System32 fileQ9Q = BladePro Graphic Plugin FileQAD = Corel WordPerfect PerfectFit QuickArt NameSpace ,WPG ThumbnailQAG = Norton Desktop Quick Access GroupQAM = Mime: application/vnd.epson.quickanimeQAM = Omnis Quartz Audio Mix QAP = Application (Omnis Quartz)QAR = Quartus II archive (http://www.altera.com)QBB = Quickbooks backup fileQBB = QuickBooks for WindowsQBD = Win3 Quicken fileQBE = dBase saved query (QBE = query by example)QBE = Quattro Pro Saved query (QBE = query by example)QBL = Business Lawyer DocumentQBO = dBASE IV compiled queryQBO = Mime: application/vnd.intu.qbo QBS = Microsoft QuickBasic : Program fileQBW = QuickBooks for Windows spreadsheetQBW = Quickbooks working fileQBX = Intuit de online fileQBX = Win3 Quicken Qbtxsys fileQCA = Mime: application/vnd.ericsson.quickcallQCALL = Mime: application/vnd.ericsson.quickcallQCP = Mime: audio/vnd.qcelpQCP = Qualcomm QCELP recoder and player voice fileQCS = CADQC Standard File QD0 = Omnis Quartz data file - segment 10QD0 = Omnis Quartz data; also QD1 ... QD9QD1 = Omnis Quartz data file - segment 1QD2 = Omnis Quartz data file - segment 2QD3 = Mime: x-world/x-3dmfQD3 = Omnis Quartz data file - segment 3QD3 = QuickDraw 3D metafileQD3D = Mime: x-world/x-3dmfQD3D = QuickDraw 3D metafileQD4 = Omnis Quartz data file - segment 4 QD5 = Omnis Quartz data file - segment 5QD6 = Omnis Quartz data file - segment 6QD7 = Omnis Quartz data file - segment 7QD8 = Omnis Quartz data file - segment 8QD9 = Omnis Quartz data file - segment 9QD? = Omnis Quartz Data File Segment (can be 0 to 9)QDAT = (MAC FILE_TYPE) KaleidaGraph DataQDAT = Quicktime for Windows install logQDB = Quicken backup fileQDF = Quicken 2002 file QDI = Win3 Quicken fileQDK = Backup of startup files created by Optimize (QEMM)QDLX = (MAC FILE_TYPE) Quicken DeluxeQDS = SavedDsQuery, open with: rundll32 dsquery.dll,OpenSavedDsQueryQDT = QuickBooks data fileQDV = Random Dot QDV bitmap image (8bit)QEF = Query file (Q+E for Ms Excel)QEL = Quicken 2002 fileQEP = IRMA Wordstation for WindowsQES = Questions QFC = Compressed file archiveQFI = Quicken 2002 fileQFL = Family Lawyer DocumentQFS = Game: need for speed Tracks Trk000 fileQFX = Mime: application/vnd.intu.qfxQFX = Quick Link II fax fileQHT = QuickTime.qht open with: %ProgramFiles%\QuickTime\QuickTimePlayer.exe "%1" Content Type text/x-html-insertionQHT = QuickTime.qht open with: %ProgramFiles%\QuickTime\QuickTimePlayer.exe "%1" QuickTime.bak Content Type text/x-html-insertionQHTM = QuickTime.qhtm open with: %ProgramFiles%\QuickTime\QuickTimePlayer.exe "%1" Content Type text/x-html-insertionQHTM = QuickTime.qhtm open with: %ProgramFiles%\QuickTime\QuickTimePlayer.exe "%1" QuickTime.bak Content Type text/x-html-insertion QIC = Backup set for MS BackupQIF = Mime: image/x-quicktimeQIF = Quicken Export File (like an address label)QIF = QuickTime ImageQIP = ArchivQKex = (MAC FILE_TYPE) QuicKeys ExtensionQKPT = (MAC FILE_TYPE) KaleidaGraphQKT = Microsoft Works fileQL = QEDIT fileQL$ = MS compressed QLB; decompress with UNPACK.EXE QLB = QB-DOS quick library used with Microsoft QB.EXE, QBX.EXE, VBDOS.EXE, QuickC 1.0QLC = ATM Type 1 fonts script (Adobe Type Manager)QLP = QuickLink Printer driverQM = QEDIT fileQM4 = Options or services file (QMail 4.x Mail Door)QMA = Qedit fileQMD = Quicken backup fileQMDF = (MAC FILE_TYPE) QuickMail Data FileQME = Win3 Quicken Windows fileQMF = Lotus Approach Database Query QML = Quick Markup Language (Quicka Ltd.)QMT = Win3 Quicken Windows fileQNT = Chromeleon Quantification MethodQNX = Win3 Quicken Windows fileQOT = Sierra Print Artist quotesQPA = QuickTimePlayerAddition special configuration file for application(binary format)QPCT = (MAC FILE_TYPE) KaleidaGraph PlotQPD = Win3 Quicken Windows fileQPI = Win3 Quicken fileQPR = Database Query; FoxPro Query Program QPR = OS/2 print queue device driverQPRJ = (MAC FILE_TYPE) THINK Pascal ProjectQPS = Mime: application/vnd.publishare-delta-treeQPW = Quattro Pro fileQPX = FoxPro compiled executable QBE query fileQQT = Quick Qard Technology Qardware Definition FileQRP = Dr hardware fileQRS = WordPerfect for Win Equation Editor support fileQRT = DKB Ray-Tracer bitmap imageQRT = Qrt Ray-Tracer ray-traced bitmap image QRY = dBASE IV queryQRY = gen. Database QueryQRY = Lotus Approach query for SQL tablesQRY = Mime: text/htmlQSC = Pxyl Visuals ChartQSD = Quicken 2002 fileQSEG = QSEGFILE open with: "%Applications%\SlimBrowser\sbrowser.exe" %1QSF = Micrografx QuickSilver; compressed Internet live graphicQSfL = (MAC CREATOR CODE) Check file of the Symantec AV QSfl = (MAC FILE TYPE) Check file of the Symantec AV QSN = QuickScan data (TapCIS)QST = Ami Pro QuickStart Tutorial imageQST = Quake Spy Tab fileQSTY = (MAC FILE_TYPE) KaleidaGraph StylQT = Mime: video/quicktimeQT = Movie Clip; Apple QuickTime movieQTA = Archive; qtar same as tarQTC = Apple QuickTime Support file: ConferencingQTC = Mime: video/x-qtcQTI = Mime: image/x-quicktime QTI = QuickTime-related imageqtif = (MAC FILE_TYPE) TIFF ImageProfileeojectifQTIF = Mime: image/x-quicktimeQTIF = QuickTime-related imageQTK = QuickTake digital camera bitmap imageQTL = YUV SECAM or PAL imageQTM = Apple QuickTime MovieQTP = QuickTime Preferences fileQTR = QuickTimeResources special configuration file for application(binary format)QTS = Macintosh PICT image file QTS = QuickTimeQTV = Movie (QuickTime Virtual Reality)QTVR = Mime: video/quicktimeQTVR = QuickTime VRQTX = QuickTime-related image extensionQU2 = QuoVadis 2.0 : DocumentQUAD = 3d GraphicQUE = Scheduler QUEue objectQUERY = PCHEALTH HELPCTR fileQUI = Game: Brain quiz file QUT = "IBM Voice Type" languages Vocabels fileQW = Q&A Write FileQWB = MS Money Quotes WriteBack Import FileQWD = MiscQWK = Qwk reader message fileQWP = Quiptics Puzzle FileQXD = QuarkXPress documentQXL = QuarkXPress element libraryQXT = QuarkXPress document/template
Search: Use ctrl-F to search for item
Universal dump-utility for non-destructive dump/list/search string etc dump.zip
Select Extension by starting letter:
A- B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U -
V- W - X - Y - Z - OTHER - Allowed chars in Filenames - what is an extension?
If you find an extension missing, write! No guarantee given for completeness or correctness. If you feel an extension is outdated, write!
Authors and retailers: it is in the interest of us all and our customers to avoid the double use of extensions! Please help us keep this compilation up todate!
Send extension data to: email@example.com
Any questions for not listed extensions or "what program opens xxx": firstname.lastname@example.org
Any other questions, remarks, praise, flaming or reproach: email@example.com
Compilation Copyright (c) 2002 R.Bitsch, Compilation Copyright (c) 2009,2010 R.Cooper-Bitsch