| .EPDF | ImageMagick Studio LLC | Ficheiros Gráficos | Encapsulated Portable Document Format | ImageMagick | ImageMagick Studio LLC |
| .EPSI | Adobe Systems Incorporated | Ficheiros Gráficos | Adobe Encapsulated PostScript Interchange Format | Adobe Photoshop | Adobe Systems Incorporated |
| .ERM | Insoft Oy | Ficheiros Gráficos | Prosa Entity Relationship Diagram Model | Prosa UML Modeller | Insoft Oy |
| .ES | Interscape | Ficheiros Gráficos | ECHOSPEECH File | ECHOSPEECH | Interscape |
| .EVA | Unknown Developer | Ficheiros Gráficos | Viz Modeler 3D Scene Archive File | Unknown Software | Unknown Developer |
| .EX3 | Harvard Graphics | Ficheiros Gráficos | Harvard Graphics Device Driver File | Harvard Graphics ChartXL | Harvard Graphics |
| .EYA | ESRI China (Beijing) | Ficheiros Gráficos | eYaViewer Graphics File | Unknown Software | Unknown Developer |
| .EYE | EyeMail Technology Inc. | Ficheiros Gráficos | Eyemail Video Recording File | ETI Monet TV | EyeMail Technology Inc. |
| .F3LA | Corel | Ficheiros Gráficos | Corel Texture File | Unknown Software | Unknown Developer |
| .FAC | Newera Software Technology, Inc. | Ficheiros Gráficos | FACE Graphic File | Graphics Converter Pro | Newera Software Technology, Inc. |
| .FIG | Open Source | Ficheiros Gráficos | Xfig Drawing | Winfig | Andreas Schmidt |
| .FIS | 3AM Solutions | Ficheiros Gráficos | Dynamite VSP Feature Interpretation Style | Dynamite VSP | 3AM Solutions |
| .FIX | Corey Zeke Womack (Torrunt) | Ficheiros Gráficos | Vimage Image File | Vimage | Corey Zeke Womack (Torrunt) |
| .FIZ | National Radio Astronomy Observatory (NRAO) | Ficheiros Gráficos | FITS Graphics Data | FITSview | National Radio Astronomy Observatory (NRAO) |
| .FLAG | Interscape | Ficheiros Gráficos | FlagMaker Document | FlagMaker | Interscape |
| .FLC | Autodesk, Inc. | Ficheiros Gráficos | FLIC Animation | Apple QuickTime Player | Apple |
| .FLX | Autodesk, Inc. | Ficheiros Gráficos | FLIC Animation | Apple QuickTime Player | Apple |
| .FMC | Interscape | Ficheiros Gráficos | FormConnect Form File | FormConnect | Interscape |
| .FMF | Data Techniques Inc. | Ficheiros Gráficos | Fax Man Document | FaxMan Jr | Data Techniques Inc. |
| .FMP | Dreamingsoft | Ficheiros Gráficos | 123 Flash Menu Project | 123 Flash Menu | Dreamingsoft |
| .FMV | Safe Software | Ficheiros Gráficos | FME Desktop Viewspace File | FME Desktop | Safe Software |
| .FRA | Electronic Arts | Ficheiros Gráficos | FIFA World Cup Game Data | FIFA World Cup | Electronic Arts |
| .FRAME | Adobe Systems Incorporated | Ficheiros Gráficos | Adobe FrameMaker Interchange Format | Adobe FrameMaker | Adobe Systems Incorporated |
| .FRP | Delrina | Ficheiros Gráficos | PerForm Or FormFlow Form File Format | PerForm | Delrina |
| .FRS | Corel | Ficheiros Gráficos | Corel WordPerfect Screen Font Resource File | Corel WordPerfect | Corel |
| .FXD | Microsoft Corporation | Ficheiros Gráficos | FoxPro FoxDoc Support Data | Microsoft Visual FoxPro | Microsoft Corporation |
| .G09 | Atari Corporation | Ficheiros Gráficos | Atari Picture Image File | Recoil | Piotr Fusik |
| .G3F | EquiSys | Ficheiros Gráficos | Zetafax Fax | ZetaFax | EquiSys |
| .G3N | XnSoft | Ficheiros Gráficos | Imaging Fax Image | XnView MP | XnSoft |
| .G4 | Microsoft Corporation | Ficheiros Gráficos | Microsoft Access Image Format | Microsoft Access | Microsoft Corporation |
| .G8 | Cubicomp | Ficheiros Gráficos | Cubicomp PictureMaker Green Channel Image Data File | Cubicomp PictureMaker | Cubicomp |
| .GBR | Gerber Technology | Ficheiros Gráficos | Gerber Format File | Altium Designer | Altium |
| .GD2 | Boutell | Ficheiros Gráficos | GD Library 2 Image File | GD Library | Boutell |
| .GDF | Eytan Adar | Ficheiros Gráficos | GUESS Graph Data Format File | GUESS | Eytan Adar |
| .GEO | Redway3d and others | Ficheiros Gráficos | VRML Geography File | TurboCAD | IMSI/Design, LLC |
| .GG | Google | Ficheiros Gráficos | Google Desktop Gadget File | Google Desktop | Google |
| .GGP | Dassault Systèmes | Ficheiros Gráficos | GemCom Graphic Format File | GEOVIA | Dassault Systèmes |
| .GHT | Symantec Corporation | Ficheiros Gráficos | Norton Ghost Project | Norton Ghost | Symantec Corporation |
| .GMP | Blue Marble Geographics | Ficheiros Gráficos | Global Mapper Package File | Global Mapper | Blue Marble Geographics |
| .GNV | DNASTAR | Ficheiros Gráficos | GenVision Project | GenVision | DNASTAR |
| .GP3 | Arobas Music | Ficheiros Gráficos | Guitar Pro 3 File | Music Guitar Pro | Arobas Music |
| .GPH | StataCorp | Ficheiros Gráficos | Stata Graph Data | Stata | StataCorp |
| .GPP | Open Source | Ficheiros Gráficos | Guitar Practiced Perfectly 2 Data File | Guitar Practiced Perfectly version 2 | Open Source |
| .GQF | Pedagoguery Software Inc | Ficheiros Gráficos | GrafEq Data File | GrafEq | Pedagoguery Software Inc |
| .GQS | Pedagoguery Software Inc | Ficheiros Gráficos | GrafEq Data File | GrafEq | Pedagoguery Software Inc |
| .GRA | Microsoft Corporation | Ficheiros Gráficos | Microsoft Graph File | Microsoft Excel | Microsoft Corporation |
| .GRG | GreatProgs | Ficheiros Gráficos | GreatFamily Graphic Gallery | GreatFamily | GreatProgs |
| .GRQ | Barco Graphics | Ficheiros Gráficos | Quickstep Barco Graphics File | Unknown Software | Unknown Developer |
| .GX1 | Unknown Developer | Ficheiros Gráficos | Show Partner Graphics File | Unknown Software | Unknown Developer |
| .HCG | HCSoft Programación | Ficheiros Gráficos | HClab Chart File | HCLab | HCSoft Programación |
| .HDW | Harvard Graphics | Ficheiros Gráficos | Harvard Graphics Graphic File | Harvard Graphics ChartXL | Harvard Graphics |
| .HED | XnSoft | Ficheiros Gráficos | Hi-Eddi Image File | Unknown Software | Unknown Developer |
| .HFT | Matthew Bender | Ficheiros Gráficos | HotDocs Form Template | HotDocs | Matthew Bender |
| .HGS | Harvard Graphics | Ficheiros Gráficos | Harvard Graphics Graphic File | Harvard Graphics ChartXL | Harvard Graphics |
| .HLI | TDK Corporation | Ficheiros Gráficos | MOJO 620 Logo File | MOJO 620 Logo | TDK Corporation |
| .HR | Atari Corporation | Ficheiros Gráficos | Atari Picture Image File | Recoil | Piotr Fusik |
| .HRZ | Unknown Developer | Ficheiros Gráficos | Slow Scan TeleVision File (SSTV) | XnView MP | XnSoft |
| .IBM | Commodore International | Ficheiros Gráficos | Commodore Amiga Graphics Data | Ability Office | Ability Plus Software |
| .ICC | Corel | Ficheiros Gráficos | International Color Consortium Profile File | Adobe Photoshop CC | Adobe Systems Incorporated |
| .IDR | Mediachance | Ficheiros Gráficos | CompactDraw Project | CompactDraw | Mediachance |
| .IIM | Ipswitch, Inc. | Ficheiros Gráficos | iMacro Macro File | Mozilla Firefox | Mozilla |
| .IKO | Microsoft Corporation | Ficheiros Gráficos | Windows Icon Resource File | ICON resource | Microsoft Corporation |
| .ILM | Commodore International | Ficheiros Gráficos | Amiga IFF Image | Amiga Forever | Cloanto Corporation |
| .IM7 | LaVision | Ficheiros Gráficos | DaVis Graphics File | DaVis | LaVision |
| .IMA | Sage | Ficheiros Gráficos | Sage ACT! Email Message | Act! | Swiftpage, Inc. |
| .IME | Microsoft Corporation | Ficheiros Gráficos | Windows Input Method Editor File | Microsoft Windows | Microsoft Corporation |
| .IMI | Embarcadero Technologies | Ficheiros Gráficos | Turbo Pascal DOS File | Turbo Pascal | Embarcadero Technologies |
| .IMR | IBM | Ficheiros Gráficos | Impromptu Report File | IBM Cognos Impromptu | Symitar |
| .INP | Concept Software | Ficheiros Gráficos | Urdu InPage Document | Urdu InPage | Concept Software |
| .INST | Interscape | Ficheiros Gráficos | RMCProfile Peak Profile Data | RMCProfile | Interscape |
| .IPC | IncrediTools | Ficheiros Gráficos | IncrediFlash Tools Image File | IncrediFlash | IncrediTools |
| .IPH | XnSoft | Ficheiros Gráficos | InterPaint (Hires) Image Format | XnView MP | XnSoft |
| .IPM | Walmart | Ficheiros Gráficos | Internet Photo Message File | Walmart Digital Photo Manager | Walmart |
| .IPW | Uniplot Software | Ficheiros Gráficos | UniPlot Graph File | UniPlot | Uniplot Software |
| .IPZ | Mail.Ru | Ficheiros Gráficos | ICQ | ICQ | Mail.Ru |
| .IWC | Felipe Sánchez | Ficheiros Gráficos | Installwatch Database File | InstallWatch | Felipe Sánchez |
| .JASC | Corel | Ficheiros Gráficos | JAS Compressed Graphic | PaintShop Pro | Corel |
| .JFF | Freedom Scientific | Ficheiros Gráficos | JAWS INI Data | JAWS | Freedom Scientific |
| .JJ | Pierre-Emmanuel Gougelet | Ficheiros Gráficos | Doodle C64 Compressed Image Format | XnView MP | XnSoft |
| .JPK | JPK Instruments | Ficheiros Gráficos | JPK Instruments File Format | Unknown Software | Unknown Developer |
| .JPM | Irfan Skiljan | Ficheiros Gráficos | JPEG 2000 Multi-layer Image Format (ISO 15444-6) | IrfanView | Open Source |
| .KFT | FMJ-Software | Ficheiros Gráficos | Korg T-series Wave Data | Awave Studio | FMJ-Software |
| .KMG | Sega | Ficheiros Gráficos | Sega Dreamcast Uncompressed Image | Dreamcast | Sega |
| .KNK | Accugraphic Sales, Inc. / KNK | Ficheiros Gráficos | KNK Studio Cutting Document | KNK Studio (Klic-N-Kut) | Accugraphic Sales, Inc. / KNK |
| .KOM | KingMill Enterprises | Ficheiros Gráficos | Kit-O-Mat 3D Model File | Kit-O-Mat | KingMill Enterprises |
| .KPT | Open Source | Ficheiros Gráficos | KPresenter Template File | KOffice | Open Source |
| .KRA | Open Source | Ficheiros Gráficos | Krita Image | Krita | Open Source |
| .KRS | GEUS Ware SRO | Ficheiros Gráficos | GEUS Drawing | GEUS | GEUS Ware SRO |
| .KSS | FabTrol Systems | Ficheiros Gráficos | FabTrol MRP Template | FabTrol | FabTrol Systems |
| .KTR | Keymark Enterprises | Ficheiros Gráficos | KeyTruss Truss File | KeyTruss Design and Estimating Software | Keymark Enterprises |
| .KZM | Image Ink India PVT. LTD | Ficheiros Gráficos | Karizma Design Smart | Karizma Design Smart | Image Ink India PVT. LTD |
| .KZX | Solid Iris Technologies | Ficheiros Gráficos | Kerkythea Material Data | Kerkythea | Solid Iris Technologies |
| .LAD | Daylon Graphics | Ficheiros Gráficos | Daylon Leveller Animation Data | Daylon Leveller | Daylon Graphics |
| .LBL | Interscape | Ficheiros Gráficos | Now Contact Label Template | Now Up-to-Date (Now Contact) | Now Software |
| .LDA | Pierre-Emmanuel Gougelet | Ficheiros Gráficos | LaserData Image Format File | XnView MP | XnSoft |
| .LJ | Hewlett-Packard | Ficheiros Gráficos | HP LaserJet Graphic | HP LaserJet Driver | Hewlett-Packard |
| .LP3 | Piotr Fusik | Ficheiros Gráficos | Logo Painter 3/3+ Picture Image | Recoil | Piotr Fusik |
| .LSM | Carl Zeiss | Ficheiros Gráficos | Ziess LSM Microscope Image | LSM Image Browser | Carl Zeiss |
| .LVD | MP Filtri | Ficheiros Gráficos | LPA-View | LPA View | MP Filtri |
| .LVP | Avaya | Ficheiros Gráficos | Avaya Voice Player Audio File | Avaya Voice Player | Avaya |
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