| File extensions | Description | Publisher | File group |
| 123 | Lotus 123 File | Lotus | Office Document |
| 12M | Lotus 123 Master | Lotus | Office Document |
| 3DA | Crystal Reports File | Crystal Decisions | Document |
| 3GP | 3GP Multimedia Container Format | Third Generation Partnership Project (3GPP) | Film |
| 3TF | Crystal Reports File | Crystal Decisions | Document |
| 3WS | Crystal Reports File | Crystal Decisions | Document |
| 7Z | 7-Zip Archive | Igor Pawlow | Archive |
| ACCDB | Access 2007 | Microsoft | Data base |
| ACE | ACE File | e-Merge | Archive |
| ACM | Windows System File | Microsoft | Application |
| ACP | Arcon Project File | TriCAD | Miscellaneous |
| AC3 | Dolby Digital Audio Codec 3 File | Dolby Digital | Audio |
| ADP | Access Project | Microsoft | Data base |
| ADT | Fax File Format | AdTech | Application |
| AFM | Adobe Font Metrics | Adobe | Application |
| AI | Adobe Illustrator Format | Adobe | Graphic |
| AIF | QuickTime File | Apple | Movies |
| AM | Sound File Format | Audio | |
| ANI | Animated Pointer | Microsoft | Graphic |
| API | Acrobat Plug-In | Adobe | Application |
| APK | Android Application Package File | Application | |
| ARJ | ARJ Archive Format | ARC Software Inc. | Archive |
| ARX | ARX Prozess | Miscellaneous | |
| ASF | Advanced Streaming Format | Microsoft | Movies |
| ASMX | ASP.NET Webservices Source | Microsoft | Application |
| AU | Sound Player File | Sun Microsystems | Audio |
| AUP | Audacity Project File | Dominic Mazzoni, u. a. | Audio |
| AVI | Audio Video Interlaced File | Microsoft | Movies |
| AW | Answer Wizard File | Microsoft | Application |
| AX | Windows System File | Microsoft | Application |
| BIN | Binary File Format | Microsoft | Application |
| BKF | WindowsXP Backup Utility Backup Set | Microsoft | Application |
| BLD | 3D Home Architect | 3D Home | Graphic |
| BLEND | Blender 3D Data File | The Blender Foundation | Graphic |
| BMP | Windows Bitmap | Microsoft | Graphic |
| BOO | FrameMaker Format | Adobe | Graphic |
| BQY | BrioQuery File | Brio Technology | Data base |
| BRK | BRK File Format | Adobe | General |
| BTR | Btrieve Database File | Pervasive Software | Data base |
| CAB | Windows Cabinet Archive | Microsoft | Archive |
| CAL | CAL File Format | General | |
| CAP | Concept16 Database File | Vectorsoft | Data base |
| CDR | Corel Draw 8/9/10/11/12/X3 | Corel | Graphic |
| CDT | Corel Draw Template File | Corel | Graphic |
| CHM | Compiled Help File Format | Microsoft | Application |
| CHQ | Help Combined Full-text Search File | Microsoft | Application |
| CIFF | CIFF Format | Canon | Digital camera RAW-Format |
| CLA | Java Class File | Sun Microsystems | Document |
| CLP | Windows Clipboard Format | Microsoft | Graphic |
| CLS | JavaScript Class | Sun | Document |
| CLY | ACT!Layout | Best Software CRM Division | Document |
| CMX | Corel Clipart | Corel | Graphic |
| CNT | Windows Help File Content | Microsoft | Application |
| CNV | Text Converter File | Microsoft | Application |
| CONT | Contax Raw Format | Contax | Digital camera RAW-Format |
| CPI | International Code Page | Microsoft | Application |
| CPL | Control Panel File | Microsoft | Application |
| CPP | C/C++ Source Code File | Text | |
| CPT | Photo-Paint Image | Corel | Graphic |
| CR2 | CR2 Format | Canon | Digital camera RAW-Format |
| CRAFT | Serif CraftArtist | Serif | Graphic |
| CTM | CTM File Format | CTM Development | General |
| CUE | CUE File Format | General | |
| CUR | Cursor File Format | Microsoft | Graphic |
| DB | Paradox Database | Borland | Data base |
| DBS | DBS Library | Archive | |
| DBX | Outlook Express E-mail Folder | Microsoft | |
| DBx | Microsoft Picture Catalog | Microsoft | Graphic |
| DCM | DICOM Medical Imaging Data | Graphic | |
| DCR | Shockwave Director File | Macromedia | Graphic |
| DIB | Device-Independent Bitmap graphics | Microsoft | Graphic |
| DICM | Digital Imaging and Communications in Medicine (DICOM) | DICOM | Graphic |
| DIT | Windows Active Directory Schema | Microsoft | Application |
| DLL | Dynamic Link Library | Microsoft | Application |
| DOC | Word 6.0/97/2000/XP/2003 | Microsoft | Office Document |
| DOCX | Word 2007 | Microsoft | Office Document |
| DOT | Word Template | Microsoft | Office Document |
| DPA | Serif DrawPlus | Serif | Graphic |
| DPP | Serif DrawPlus | Serif | Graphic |
| DRD | O&O DiskRecovery Data File | O&O Software | Application |
| DRF | O&O DiskRecovery Filetype File | O&O Software | Application |
| DRS | O&O DiskRecovery Signature File | O&O Software | Application |
| DRV | Windows System Driver | Microsoft | Application |
| DRW | Micrografx Designer Format | Micrografx | Graphic |
| DSC | Rollei Raw Format | Rollei | Digital camera RAW-Format |
| DSG | EOD File | Sierra | Miscellaneous |
| DSN | ODBC Datasource File | Microsoft | Data base |
| DUN | DUN File Format | Microsoft | Application |
| DWG | AutoCAD File Format | Autodesk | Graphic |
| DXR | Protected Movie File | Macromedia | Movies |
| ECF | Extension Configuration File | Microsoft | Application |
| EDB | Exchange Server Database | Microsoft | Data base |
| ELM | FrontPage Theme-Pack File | Microsoft | Internet/Web |
| EMF | Windows Enhanced Meta File | Microsoft | Graphic |
| EML | Mozilla EML | Internet/Web | |
| EPS | Encapsulated Postscript | Adobe | Document |
| ETP | Visual Studio .NET Enterprise Template Project | Microsoft | Document |
| EXE | Executable File | Microsoft | Application |
| FAE | FAE File Format | Microsoft | General |
| FDB | Firebird Database File | Firebird | Data base |
| FH8 | Freehand File Format | Macromedia | Graphic |
| FLA | Flash Movie Authoring File | Macromedia | Movies |
| FLC | Autodesk Animator File | Autodesk | Graphic |
| FLT | FLT File Format | Autodesk | General |
| FLAC | Free Lossless Audio Codec File | Josh Coalson (Xiph.Org Foundation) | Sound |
| FMT | FMT File Format | Microsoft | Office Document |
| FON | Font File | Microsoft | Application |
| FOV | Foveon Raw Format | Foveon | Digital camera RAW-Format |
| FP5 | Filemaker Pro | Filemaker Inc. | Data base |
| FPX | FlashPix Format | Kodak | Graphic |
| FRT | FoxPro File | Microsoft | Data base |
| FUJI | Fujifilm Raw Format | Fujifilm | Digital camera RAW-Format |
| GIF | GIF 87a/89a | Compuserve | Graphic |
| GLY | ACT!Layout | Best Software CRM Division | Application |
| GMT | ACT!Email Template | Best Software CRM Division | Application |
| GZ | gzip Archive (Unix) | gzip Org | Archive |
| HHC | Help File Content | Microsoft | Application |
| HHP | Help Project File | Microsoft | Application |
| HLP | Windows Help File | Microsoft | Application |
| HLX | ATI Radeon Video Driver Support File | ATI | Application |
| HQX | BinHex Compressed File | Apple | Application |
| HRB | HRB File | Miscellaneous | |
| HTM | Hypertext Markup Language | World Wide Web Consortium | Internet/Web |
| HXI | Help 2 Compiled Help File | Microsoft | Application |
| HXK | Help 2 Keyword Index | Microsoft | Application |
| HXS | Help 2 Compiled Help File | Microsoft | Application |
| HXW | HXW File Format | Microsoft | General |
| ICC | ICC Profile Format File | Application | |
| ICM | Image Color Matching File | Apple | Application |
| ICO | Windows Icon File | Microsoft | Graphic |
| IFF | Deluxe Paint Image | Electronic Arts | Graphic |
| IME | Global Input Method Editor | Microsoft | Application |
| IMG | GEM Paint | Digital Research, Inc. | Graphic |
| IND | Full-Text Search Index File | Microsoft | Application |
| INDD | InDesign | Adobe | Graphic |
| ISU | Uninstall Script File | Microsoft | Application |
| ITS | International Translation File | Microsoft | Application |
| JP2 | JPEG 2000 File | Joint Photographic Experts Group | Graphic |
| JPG | JPEG | Joint Photographic Experts Group | Graphic |
| JPG | JPEG (EXIF Format) | Joint Photographic Experts Group | Graphic |
| JPG | JPEG (JFIF Format) | Joint Photographic Experts Group | Graphic |
| JPO | unknown | Miscellaneous | |
| KDBX | KeePass Database File | Dominik Reichl | Archive |
| KRYPTER | Krypter 2000 | Krypter | Archive |
| LBL | Label file - dBASE IV/Clipper 5/dBFast | Ashton Tate | Application |
| LBM | DeluxePaint Bitmap | Electronic Arts | Graphic |
| LDF | SQL Server Transaction Log File | Microsoft | Data base |
| LIB | Static Link Library | Microsoft | Application |
| LNK | Windows Shortcut File | Microsoft | Application |
| LRCAT | Adobe Photoshop Lightroom Catalog File | Adobe | Graphic |
| LWP | Lotus WordPro File | Lotus | Office Document |
| LXA | Office Speech Lexicon File | Microsoft | Application |
| LZH | SFX Archiver Format | APN Computing | Archive |
| M4A | MPEG-4 Audio Layer | Moving Pictures Experts Group | Audio |
| MB | Paradox Database | Borland | Data base |
| MCD | MathCad File | MathSoft | Document |
| MDB | Access 97/2000/XP/2003 | Microsoft | Data base |
| MDF | SQL Server Master Database File | Microsoft | Data base |
| MDZ | Access Wizard Template | Microsoft | Office Document |
| MFL | MFL File Format | Mozilla | General |
| MID | MIDI File Format | Microsoft | Audio |
| MINO | Minolta Raw Format | Minolta | Digital camera RAW-Format |
| MMAS | MMAS File Format | General | |
| MMAT | MMAT File Format | General | |
| MMMP | MMMP File Format | General | |
| MNY | Microsoft Money Format | Microsoft | Data base |
| MOD | CAD File | Dassault Systèmes | Graphic |
| MOV | Quicktime Movie Format | Apple | Movies |
| MP3 | MPEG 1.0 Layer 3 (V2.0) | Moving Pictures Experts Group | Audio |
| MP4 | MPEG-4 Container File | Movie | |
| MPE | Media Player Format | Microsoft | Movies |
| MPG | MPEG 1 Video | Moving Pictures Experts Group | Movies |
| MPT | Project Template File | Microsoft | Office Document |
| MSC | Management Control File | Microsoft | Application |
| MSI | Microsoft Installer | Microsoft | Archive |
| MSM | Windows Installer Merge Module | Microsoft | Application |
| MSP | Microsoft Paint | Microsoft | Graphic |
| MTS | Advanced Video Coding High Definition (AVCHD) | Panasonic/Sony | Movies |
| MVP | Serif MoviePlus | Serif | Graphic |
| MXF | Material Exchange Format (SMPTE 377M) | SMPTE/EBU/AAF | Movies |
| NCR | NCR Image | NCR | Graphic |
| NSF | Lotus Notes Database File | Lotus | Data base |
| NTF | Lotus Notes Template File | Lotus | Data base |
| O2C | O2C File | mb Software AG | Miscellaneous |
| OBK | O&O DiskImage Backup File | O&O Software | Archive |
| OCX | ActiveX Control File | Microsoft | Application |
| ODB | OpenOffice Base File | The Apache Software Foundation | Data base |
| ODF | OpenOffice Formula File | The Apache Software Foundation | Office Document |
| ODG | OpenOffice Presentation File | The Apache Software Foundation | Office Document |
| ODS | OpenOffice Calc File | The Apache Software Foundation | Office Document |
| ODT | OpenOffice Word Processor File | The Apache Software Foundation | Office Document |
| OEB | Outlook Express Database File | Microsoft | |
| OGG | Multimedia Container File | Xiph.Org Foundation | Sound |
| OMG | Image file of O&O DiskImage | O&O Software | Data security |
| ONE | OneNote 2003 | Microsoft | Office Document |
| OPA | OPA File Format | Psion | General |
| PACK | Serif CraftArtist | Serif | Graphic |
| PAL | Palette Format | Microsoft | Graphic |
| PBM | Unix Portable Bitmap Graphic | Free Software Foundation | Graphic |
| PCX | PCX File Format | Zsoft | Graphic |
| PDB | Visual C++ Program Database File | Microsoft | Application |
| Portable Document Format | Adobe | Document | |
| PFB | Font File Format | Adobe | Application |
| PGM | Portable Graymap Graphic | Graphic | |
| PIC | PC Paint | IBM | Graphic |
| PIP | Office Personalized Menu and Toolbar | Microsoft | Application |
| PMD | PageMaker File | Adobe | Document |
| PNF | Precompiled Setup File Format | Microsoft | Application |
| PNG | Portable Network Graphics | Free Software Foundation | Graphic |
| POC | POC File Format | Apple | General |
| POL | Windows Policy File | Microsoft | Application |
| POT | PowerPoint Template | Microsoft | Office Document |
| PPACK | Serif PagePlus | Serif | Graphic |
| PPD | Printer Description File | Adobe | Application |
| PPM | PBM Portable Pixelmap Graphic | Free Software Foundation | Graphic |
| PPP | Serif PagePlus | Serif | Graphic |
| PPR | PowerPlay OLAP File | Cognos | Data base |
| PPT | PowerPoint 4.0/97/2000/XP/2003 | Microsoft | Office Document |
| PPTX | PowerPoint 2007 | Microsoft | Office Document |
| PRJ | PRJ File | Miscellaneous | |
| PRT | Schedule+ Print File | Microsoft | Application |
| PRZ | Freelance Graphics File | Lotus | Office Document |
| PS | Postscript | Adobe | Document |
| PSD | Photoshop Graphic | Adobe | Graphic |
| PSP | Paint Shop Pro Graphic | Jasc Software, Inc. | Graphic |
| PST | Outlook 97/98/2000/2002/2003 | Microsoft | |
| PUB | Microsoft Publisher Document | Microsoft | Office Document |
| PX | Paradox Database Primary Index | Borland | Data base |
| PXN | Fotoman Raw Format | Logitech | Digital camera RAW-Format |
| PYC | Python Compiler Script | Bytecode | Document |
| PYD | Python Dynamic Module | Bytecode | Document |
| PYI | PowerPlay | Cognos | Miscellaneous |
| QBW | Quickbooks Data File | Intuit | Data base |
| QXD | QuarkXpress | Quark | Graphic |
| QXP | QuarkXpress Project | Quark | Document |
| RAR | RAR Archive Format | Rarlabs | Archive |
| RAS | Sun Raster Image | Sun Microsystems | Graphic |
| RAW | RAW RGB 24-bit Graphic | Graphic | |
| RDF | RDF File Format | Borland | General |
| REG | Windows RegEdit File | Microsoft | Application |
| REP | ACT!Report Template | Best Software CRM Division | Application |
| RESX | NET XML Resource Template | Microsoft | Document |
| RGB | Silicon Graphics RGB Bitmap | Silicon Graphics | Graphic |
| RGS | RGS File Format | Microsoft | General |
| RLE | Run Length Encoded Bitmap | Graphic | |
| RLL | SQL Server Resource Library | Microsoft | Data base |
| RM | RealPlayer File | RealNetworks | Audio |
| RMI | MIDI Sequence File | Microsoft | Audio |
| RTD | Render File | Ragtime | Graphic |
| RTF | Rich Text Format | Document | |
| RTM | RTM File Format | General | |
| SAP | Serif AlbumPlus | Serif | Graphic |
| SBP | Serif Digital Scrapbook Artist | Serif | Graphic |
| SCR | Windows Screensaver | Microsoft | Application |
| SCT | SciTex Continuous Tone | Kodak | Graphic |
| SDB | Windows Compatibility Solution Database | Microsoft | Application |
| SDY | Starmoney File | Starmoney | Document |
| SFL | SFL File Format | Intellifont | General |
| SKF | AutoSketch File | Autodesk | Graphic |
| SLN | Visual Studio .NET Solution | Microsoft | Document |
| SNK | SNK File Format | Microsoft | General |
| SOR | SnapShot File | Microsoft | Archive |
| SPP | Serif Photo Plus | Serif | Graphic |
| SQLT | SQLite Database File | SQLite Team | Data base |
| STY | STY File Format | Microsoft | General |
| SUO | Visual Studio Solution User Options | Microsoft | Document |
| SVG | Scalable Vector Graphics File | World Wide Web Consortium (W3C) | Graphic |
| SVGZ | Scalable Vector Graphics File (Compressed) | World Wide Web Consortium (W3C) | Graphic |
| SWF | Shockwave Flash File | Macromedia | Movies |
| SXC | OpenOffice Spreadsheet | OpenOffice.org | Office Document |
| SXD | OpenOffice Drawing | OpenOffice.org | Office Document |
| SXI | OpenOffice Presentation | OpenOffice.org | Office Document |
| SXW | OpenOffice Text Document | OpenOffice.org | Office Document |
| SYS | Windows System File | Microsoft | Application |
| TAR | TAR Archive | Free Software Foundation | Archive |
| TGA | Truevision Targa Graphic | Graphic | |
| TIF | Tagged Image File Format | Adobe | Graphic |
| TOC | Eudora File | Qualcomm | Document |
| TPL | ACT!Document Template | Best Software CRM Division | Application |
| TSP | TSP File Format | Microsoft | General |
| TST2 | Test | O&O | User-defined |
| TTF | TrueType Font | Microsoft | Application |
| TXT | Text File | Text | |
| TXT | UTF-8 Text File | Text | |
| TXT | Unicode Text File | Text | |
| TXT | Unicode Text File (Big Endian) | Text | |
| UPP | UPP File Format | General | |
| USER | USER File Format | General | |
| VB | Visual Basic File | Microsoft | Application |
| VBP | Visual Basic Project | Microsoft | Document |
| VMC | Virtual PC Virtual Machine | Microsoft | Application |
| VMDK | VMware Virtual Disk File | VMware | Application |
| VMG | Nokia SMS | Nokia | Miscellaneous |
| VMX | VMware Image File | VMware | Application |
| VOB | DVD Video Movie File | Moving Pictures Experts Group | Movies |
| VRD | Visio Resource File | Microsoft | Office Document |
| VSD | Microsoft Visio Document | Microsoft | Office Document |
| VSS | Visio Stencil | Microsoft | Office Document |
| VST | Visio Template | Microsoft | Office Document |
| VSZ | Visual Studio Extension | Microsoft | Application |
| WAB | Outlook Address Book | Microsoft | |
| WAV | Windows Audio | Microsoft | Audio |
| WBD | Microsoft Works Database | Microsoft | Office Document |
| WBMP | Wireless Bitmap File Format | Graphic | |
| WFA | "Symantec WinFax PRO Document" | Symantec | Document |
| WID | WID File Format | Ventura | General |
| WIM | WIM File Format | Microsoft | General |
| WIZ | Word Wizard File | Microsoft | Application |
| WK3 | Lotus 123 File (V3.0) | Lotus | Office Document |
| WK4 | Lotus 123 File (V4.0) | Lotus | Office Document |
| WKS | Microsoft Works | Microsoft | Office Document |
| WMA | Windows Media Audio File | Microsoft | Audio |
| WMF | Windows Metafile Format | Microsoft | Graphic |
| WMV | Windows Audio/Movie File | Microsoft | Movies |
| WPACK | Serif WebPlus | Serif | Graphic |
| WPD | WordPerfect Document | Corel | Office Document |
| WPG | WordPerfect Bitmap/Vector | Corel | Graphic |
| WPL | Windows Media Player Playlist | Microsoft | Application |
| WPP | Serif WebPlus | Serif | Graphic |
| WRI | Windows Write File | Microsoft | Document |
| XBM | X Bitmap Graphic | Graphic | |
| XCF | GIMP File (eXperimental Computing Facility) | GIMP Team | Graphic |
| XGn | Paradox Database Secondary Index | Borland | Data base |
| XLA | Excel Add-in | Microsoft | Application |
| XLS | Excel 5.0/97/2000/XP/2003 | Microsoft | Office Document |
| XLSX | Excel 2007 | Microsoft | Office Document |
| XLT | Excel Template | Microsoft | Office Document |
| XML | XML File | World Wide Web Consortium | Internet/Web |
| XPG | XPG File Format | General | |
| XPM | X Picsmap Graphic | Graphic | |
| XPT | XPT File Format | General | |
| XSN | XSN File Format | General | |
| XWD | XWD File Format | Microsoft | General |
| Xnn | Paradox Database Secondary Index | Borland | Data base |
| YGn | Paradox Database Secondary Index | Borland | Data base |
| Ynn | Paradox Database Secondary Index | Borland | Data base |
| ZIC | Zooimage | Text | |
| ZIP | ZIP Archive | Winzip | Archive |
| ZOO | ZOO 2.00/2.10 | Archive |
The listed company and product names are trademarks of the corresponding owner.
The preview feature can display the following data types:
BMP, CNT, ECF, GIF, ICO, JP2, JPG, PCX, PNG, PSP, REG, SLN, TGA, TIF, TXT, VB, VBZ, WMF, XML, XPM.