| Extension | File Type | Files scanned | Contributor |
| I | Twist Import script | 4 | |
| I3D | I3D GIANTS Engine assets | 111 | |
| I3F | I3 Fax file | 8 | |
| I64 | IDA Data Base (64-bit) | 21 | |
| IACT | MAGMAinteract simulation result (Casting) | 5 | |
| IAEAHEADER | IAEA Phase-Space Header | 55 | |
| IAF | Outlook 97 and 2000 E-mail Account Settings | 18 | Roberto 'rbnet' Bolli |
| IAGE | Internet Adventure Game Engine compiled game | 3 | |
| IAM | Autodesk Inventor Assembly | 388 | |
| IAMF | Immersive Audio Model and Format | 7 | |
| IAP | Infinity Engine Automatic Installation Package (v1) | 2 | |
| IAVF | IAVF video (v2.00) | 2 | |
| IB | Nokia phonebook backup | 4 | |
| IB3 | ICDRAW group icon bitmap | 7 | |
| IBB | ImgBurn Project | 14 | Joerg Jenderek |
| IBC | IBCards card (v1.0.x) | 5 | |
| IBCC | Apple Application Information Table | 146 | Isaac Sharrow |
| IBG | ImgBurn Graph data | 23 | |
| IBG | NASA PDS labeled bitmap | 6 | |
| IBI | ICDRAW single icon bitmap | 4 | |
| IBI | Raven Software compiled script | 4 | |
| IBK | ICE Book Reader Professional Book | 2 | |
| IBK | Imaging for Windows Image Bookmark | 9 | |
| IBK | Sound Blaster Instrument Bank | 2 | |
| IBP | IsoBuster managed image | 4 | |
| IBS | IBIS model | 14 | |
| IBS | IBIS model (with rem) | 21 | |
| IBT | IBCards template | 8 | |
| IBT | InstallShield based SZDD compressed | 11 | Joerg Jenderek |
| IBW | Pixel Studio Work graphic | 6 | |
| IC1 | Imagic picture/animation bitmap (low-res) | 2 | |
| IC2 | Imagic picture/animation bitmap (med-res) | 2 | |
| IC3 | Imagic picture/animation bitmap (hi-res) | 2 | |
| ICA | Citrix Independent Computer Architecture | 14 | |
| ICA | CopyControl I.C.A. disk image | 3 | |
| ICA | Icon Manager Icon Archive | 5 | |
| ICA | Icon Manager Icon Archive (new) | 2 | |
| ICC | Art Icons Pro - IconCollection | 7 | mishka |
| ICC | ICC Animation | 3 | |
| ICC/ICM/CC | ICC Color profile (generic) | 762 | Joerg Jenderek |
| ICD | IronCAD 2D Drawing | 17 | |
| ICE | Freeze! compressed archive | 2 | |
| ICE | ICE compressed archive | 5 | |
| ICF | ILINK linker Configuration | 601 | |
| ICF | OS/2 Install Catalog File | 6 | |
| ICF | OS/2 Install Catalog File (with CRLF) | 6 | |
| ICF | OS/2 Install Catalog File (with rem) | 6 | |
| ICG | Lightworks Effect Template | 6 | |
| ICHAT | iChat saved chat log | 4 | |
| ICL | Empire II: The Art of War Icon Library | 14 | |
| ICL | Icon library (Easy Icons v3.x) | 5 | |
| ICL | Icon library (Impact Software) | 266 | Joerg Jenderek |
| ICL | Windows Icons Library (generic) | 108 | |
| ICL | Windows Icons Library (var. 40h) | 2 | Joerg Jenderek |
| ICLOUD | Apple iCloud placeholder | 3 | |
| ICML | InCopy document | 17 | |
| ICN | Atari ST GEM Icon definition source code | 12 | |
| ICN | AutoSketch Icon Library (v1.0) | 3 | |
| ICN | DEGAS Elite Icon Definition | 6 | |
| ICN/XBG | HP Palmtop 100/200LX Icon | 48 | |
| ICN | Light-Flowcharter Icon | 2 | |
| ICN/TIL | Mah Jongg -V-G-A-/Windows Icon/Tile | 63 | |
| ICN/IC | Micrografx Icon | 25 | |
| ICN | TWS pixmap/Icon | 16 | |
| ICN | Towns OS Icon (CRI-FJ2) | 2 | |
| ICN | Towns OS Icon (CRI-FUJI) | 2 | |
| ICN | Towns OS Icon (ICNFILE) | 14 | |
| ICN/TBI | ToyBox / MagicDesk Icon | 44 | |
| ICNS | Mac OS X icon | 18 | |
| ICO | OS/2 Icon | 797 | |
| ICO | OS/2 Icon (bi-level) | 9 | |
| ICO | OS/2 Icon (color) | 5 | |
| ICO | Windows Icon | 678 | |
| ICO | Windows Icon (even big) | 679 | |
| ICONPACK | Aegis Authenticator Icons Package | 10 | |
| ICPR | Art Icons Pro - IconProject | 9 | mishka |
| ICR | NCSA Telnet Interactive Color Raster bitmap | 4 | |
| ICS | Image Cytometry Standard | 10 | |
| ICS | Image Cytometry Standard header | 6 | |
| ICS | Invictus game data | 6 | |
| ICS | IronCAD 3D Scene | 23 | |
| ICS/VCS | iCalendar - vCalendar | 5 | |
| ICSALARM | iCalendar Alarm | 45 | Joerg Jenderek |
| ICSPKG | Intellitools Classroom Suite Package | 9 | |
| ID/ID3/ID4/IDS | Infini-D Scene/model (v3.5-4.0) | 14 | |
| ID | InterActual Disc.id | 2 | |
| ID | Triforce Header | 37 | Zopolis4 |
| IDB | IDA Data Base | 30 | |
| IDB | IRIX software distribution format Installation DB (d) | 11 | |
| IDB | IRIX software distribution format Installation DB (f) | 10 | |
| IDB | IRIX software distribution format Installation DB (l) | 6 | |
| IDB | Microsoft Developer intermediate file format | 11 | |
| IDD | EnergyPlus Input Data Dictionary | 31 | |
| IDE | Borland C++ Project definition | 2 | |
| IDE | Grand Theft Auto III model IDs and properties | 12 | |
| IDE | Grand Theft Auto IV Item Definition | 7 | |
| IDE | WinAPE IDE hard disk image | 2 | |
| IDE | XRoar IDE disk image | 13 | |
| IDEA | ideaMaker project | 3 | |
| IDENTIFIER | Microsoft Zone Identifier | 5 | |
| IDF | 1nsane game data archive | 2 | |
| IDF | EnergyPlus Input Data File (auxiliary) | 42 | |
| IDF | EnergyPlus Input Data File (primary) | 87 | |
| IDF | MIDI Instrument Definition File | 8 | |
| IDF | iCEDraw graphic | 5 | |
| IDML | Adobe InDesign Markup Language | 14 | |
| IDN | Alpha Four Index Definition | 26 | |
| IDOL | IDle Object Library - bytecode | 3 | |
| IDPREFS | ImageDesk Preferences | 3 | |
| IDS/IDS2 | AmigaCash Pro IDS format | 3 | |
| IDSP | IDSP audio | 12 | |
| IDTF | Intermediate Data Text Format (v1.00) | 58 | |
| IDW | Aldus IntelliDraw Drawing | 227 | |
| IDW | Autodesk Inventor Drawing | 30 | |
| IDX | Clangd Index | 3 | |
| IDX/IMG | Davilex Games game data format | 3 | |
| IDX | Foto-Mosaic-Edda Data Base Index | 2 | |
| IDX | Java Applet cache index | 916 | |
| IDX | Norton Utilities Image backup index | 2 | |
| IDX | PPC Organiser Index | 3 | |
| IDX | Parsons Technology resource Index | 2 | |
| IDX | TapEx Index | 2 | |
| IDX | VobSub Index file | 25 | |
| IDX | the Word Bible Text Module Index | 9 | |
| IDX2 | Avidemux video Index | 4 | |
| IEM | Internet Explorer Maintenance extension | 3 | Stef |
| IES | IES LM-63 Photometric data | 1444 | |
| IES | IES LM-63 Photometric data (UTF-8) | 2042 | |
| IF | InterFont font (v1.0) | 71 | |
| IFC | IFC-SPF | 287 | |
| IFC | IFC-SPF (with rem) | 11 | |
| IFCXML/XML | IFC-XML | 74 | |
| IFCXML | IFC-XML (UTF-8) | 39 | |
| IFCZIP | IFC-XML compressed | 19 | |
| IFCZIP | IFC-ZIP | 2 | |
| IFF | "The Sims" object | 30 | |
| IFF | Amiga IFF 16SVX Audio | 13 | |
| IFF | BioForge IFF objects | 10 | |
| IFF | CD-I IFF image bitmap | 10 | |
| IFF | Deluxe Music Construction Set music | 8 | |
| IFF/RGB4 | IFF 12-bit RGB bitmap | 4 | |
| IFF/RGBN | IFF 12-bit RGB bitmap | 2 | |
| IFF/RGB8 | IFF 24-bit RGB bitmap | 2 | |
| IFF | IFF Atari ST Interleaved bitmap | 4 | |
| IFF | IFF Common Musical Score | 12 | |
| IFF | Maya IFF bitmap | 11 | |
| IFF | ORIGIN Systems IFF palette | 4 | |
| IFF | Starlancer Saved game | 26 | |
| IFICTION | iFiction Metadata | 4 | |
| IFL | IncrediFlash animation | 11 | |
| IFL | Lotus Impress Font | 23 | |
| IFL | Lotus Wysiwyg Font | 9 | |
| IFO | DVD Info file | 26 | |
| IFO | StarDict Info | 13 | |
| IFP | Grand Theft Auto animation (ANP2) | 2 | |
| IFP | Grand Theft Auto animation (ANP3) | 3 | |
| IFP | Grand Theft Auto animation (ANPK) | 2 | |
| IFP | InstallForge Project | 7 | |
| IFP | InstallForge Project (UTF-8) | 3 | |
| IFS | CHAOS Barnsley IFS Data | 27 | |
| IFS | DIV Games Studio Font Source | 55 | |
| IFS | Harman/Becker compressed IFS partition image | 2 | |
| IFS | OS/2 Installable File System | 12 | |
| IFX | Atari ST PARX Image Effects Module (SHI) | 13 | |
| IFX | Atari ST PARX Image Effects Module (VDI) | 2 | |
| IFX | Atari ST PARX Image Effects Module (generic) | 4 | |
| IFX | Imagine for DOS Effect | 8 | |
| IFX | Imagine for Windows Effect | 36 | |
| IGC | IGC Flight Track | 49 | |
| IGI | Indigo Image | 2 | |
| IGLANG | ImageGlass Language | 21 | |
| IGM | Indigo Renderer Material | 6 | |
| IGN/REXX | Ignition spreadsheet Rexx script | 4 | |
| IGR | Intergraph SmartSketch Drawing | 15 | |
| IGS | Ignition spreadsheet | 12 | |
| IGS | Indigo Renderer Scene | 3 | |
| IGS/IGES | Initial Graphics Exchange Specification (IGES) data | 35 | |
| IGS/IGES | Initial Graphics Exchange Specification (IGES) data (var.2) | 13 | |
| IGS/IG/GR1 | Instant Graphics and Sound | 10 | |
| IGTX/ITX/TXT/TEXT | IGOR Pro Text document | 17 | |
| IGX | iGrafx document | 5 | |
| IGZ | Intrinsic Alchemy asset data | 6 | |
| IIC | Stream Deck layout | 8 | |
| IIF | QuickBooks Import/Export Interchange File | 114 | |
| IIM | InShape IIM bitmap | 4 | |
| IIMG/IMG | Interleaf Image bitmap | 2 | |
| IINV | Instant Invoice invoice (v1.x) | 3 | |
| IIP | Install Creator Pro project | 2 | |
| IIP | Install Maker Pro project | 2 | |
| IIQ | Intelligent Image Quality - Phase One RAW image | 15 | |
| IIT | Install Creator project | 2 | |
| IIT | Install Maker project | 2 | |
| IKMP | IK Multimedia Preset | 24 | |
| IL | Icon library (hDC Icon Designer) | 7 | |
| IL3 | particleIllusion library | 13 | |
| ILAB | ImageLab image cube metadata | 15 | |
| ILB/SLB | SPIL Image Library | 29 | |
| ILB | Scream Tracker Instruments Library | 14 | |
| ILBM/BBM/LBM | IFF ILBM bitmap (variant) | 26 | |
| ILBM/LBM/IFF | IFF InterLeaved BitMap | 78 | |
| ILBM/LBM/IFF | IFF Newtek Dynamic HAM bitmap | 9 | |
| ILBM/LBM/IFF | IFF Palette Changes HAM bitMap | 5 | |
| ILBM/LBM/IFF | IFF Sliced HAM bitmap | 6 | |
| ILD/ILDA | ILDA image data transfer format | 8 | |
| ILK | Microsoft Incremental Linker data | 20 | |
| ILM | Opus Creator multimedia file | 18 | |
| ILUS | PageStream Illustration (IFF ILUS) | 8 | |
| ILV | ILOG View | 20 | |
| ILX | Interlex vocabulary | 22 | |
| IM | Applix bitmap | 2 | |
| IM | LabEye Image bitmap | 6 | |
| IMA | Actor Image snapshot (v1.0) | 3 | |
| IMA | Actor Image snapshot (v3.1) | 4 | |
| IMA | Actor Image snapshot (v3.2) | 5 | |
| IMA | Actor Image snapshot (v4.1) | 8 | |
| IMA | Image'n'Bits Image | 9 | |
| IMA | ImageMixer project | 4 | |
| IMA | IncrediMail Animation | 42 | |
| IMA/IMF/IMI/IMN/IMS/IMW | IncrediMail data (generic) | 122 | Joerg Jenderek |
| IMA/IMG | Old DOS disk image | 4 | Joerg Jenderek |
| IMA | PPrint Image | 22 | |
| IMA | WinImage disk image | 5 | |
| IMA4 | IMA4 encoded audio | 2 | |
| IMAGE | AVM FRITZ!Box firmware | 43 | Joerg Jenderek |
| IMAGE | CoLOS Image (V1) | 8 | |
| IMB | IncrediMail Address Book | 4 | |
| IMC | Runtime Software compressed raw image | 3 | |
| IMC | Signum! bitmap | 2 | |
| IMD | ImageDisk IMDU disk image | 3 | |
| IMD | ImageDisk disk image | 35 | |
| IMD | QuarkImmedia Document | 3 | |
| IMD | UCDOS Input Metod Driver | 3 | |
| IME | IncrediMail Emoticon | 5 | |
| IME | Microsoft Input Method Editor | 51 | Joerg Jenderek |
| IMEXP/IMHWD | Imhotep Container | 5 | |
| IMF | Imago Orpheus module | 9 | |
| IMF | IncrediMail letter/ecard Flavor | 110 | |
| IMG | ADEX ChromaGraph bitmap | 46 | |
| IMG | Android Generic System Image | 7 | |
| IMG | Android boot image | 2 | |
| IMG | ArtMaster88 bitmap | 3 | |
| IMG | Bochs disk image (generic) | 2 | |
| IMG | Bochs growing disk image | 2 | |
| IMG | Bochs sparse disk image | 2 | |
| IMG | Brother WP1a disk image (240KB) | 4 | |
| IMG | Brother WP1a disk image (720KB) | 3 | |
| IMG | Brother Word Processors disk image (240K) | 2 | |
| IMG | CopyTape intermediate data format | 11 | |
| IMG | DENON DJ PRIME 4 firmware | 10 | |
| IMG | DOSIMG disk image (80t/15s) | 6 | |
| IMG | DOSIMG disk image (80t/18s) | 6 | |
| IMG | Danish Micro Engineering Rasterscope SPM data | 2 | |
| IMG | Digital Research GEM VDI bitmap | 15 | |
| IMG | Disk Image for DOS disk Image (v1.x) | 3 | |
| IMG/DMF/IMA | Distribution Media Format disk image | 199 | |
| IMG | EFI partition image | 3 | |
| IMG | Eclipse Image | 2 | |
| IMG | FDIMAGE disk image | 4 | |
| IMG | Floppy Diskette Copy disk image | 3 | |
| IMG | GEM bitmap (v1) | 43 | |
| IMG | GEM bitmap (v2) | 2 | |
| IMG | GEM bitmap (v3) | 4 | |
| IMG | Garmin Mapsource Img (actual compressed maps) | 2033 | Graham Rose |
| IMG | Garmin basemap | 6 | |
| IMG | Grand Theft Auto: San Andreas game data archive | 2 | |
| IMG | HD-Copy disk image | 4 | |
| IMG | Hi-MD Minidisc disk image | 12 | |
| IMG | IMAGEWTY Allwinner firmware format | 2 | |
| IMG | Img Software Set bitmap | 17 | |
| IMG | LILO bootloader disk image | 24 | |
| IMG/LUKS | LUKS encrypted disk image (generic) | 7 | |
| IMG/LUKS | LUKS encrypted disk image (v1) | 2 | |
| IMG/LUKS | LUKS encrypted disk image (v2) | 4 | |
| IMG/EXT2/EXT3/EXT4 | Linux extended file system image | 5 | Joerg Jenderek |
| IMG | MIT CADR Lisp Machine disk image | 2 | |
| IMG/BIN | Mediatek Android ROM Image | 17 | |
| IMG | NeXT disk image | 14 | |
| IMG | PCOS bootable disk image | 11 | |
| IMG | Partclone image | 3 | |
| IMG | Partimage disk image | 2 | |
| IMG | Pax Imperia: Eminent Domain game data archive | 2 | |
| IMG | Piklib/BlooMoo graphic data | 68 | |
| IMG | Poly tape image | 21 | |
| IMG | Pro Evolution Soccer 2010 game data archive | 4 | |
| IMG | QDOS QL floppy disk image (DS/DD) | 2 | |
| IMG | QDOS QL floppy disk image (DS/HD) | 2 | |
| IMG | QNX volume disk image | 18 | |
| IMG | Qualcomm Device Tree Image | 4 | |
| IMG | RC579 PICCOLINE disk image | 16 | |
| IMG | RC750 PICCOLINE disk image | 5 | |
| IMG | RockChip firmware container | 4 | |
| IMG/ISO | SGI volume image | 2 | |
| IMG | ScreenBuilder image | 9 | Paul Panks |
| IMG | Tektronix 4400-serie UniFLEX disk image | 43 | |
| IMG | Texas Instruments AR7 based router firmware | 29 | |
| IMG | The Duplicator Toolkit disk image | 3 | |
| IMG | Xerox Star hard disk image | 9 | |
| IMG | ZealFS disk image | 3 | |
| IMG/XDF | eXtended Density Format disk image | 133 | |
| IMG2/DFU | Apple 8900 encrypted signed container | 14 | |
| IMG3/DFU | Apple Img3 encrypted signed container | 51 | |
| IMI | IncrediMail Image | 130 | |
| IML | ACT! Internet Mail message | 3 | |
| IMM | Interactive Multimedia Maker project (v1.00) | 2 | |
| IMM/PAS | TheDraw Pascal screen Image | 10 | |
| IMN | IncrediMail Notifier (with Flash) | 19 | |
| IMO | iMON Setting file | 50 | |
| IMOVIEPROJ | iMovie project | 30 | |
| IMOVIEPROJ | iMovie project (old ver.) | 20 | |
| IMP | IMP eBook (v1.0) | 3 | |
| IMP | IMP eBook (v1.5) | 2 | |
| IMP | Imp compressed archive | 23 | |
| IMP | Improv spreadsheet | 14 | |
| IMP | Improv spreadsheet (v1.0, NeXT) | 31 | |
| IMP | Improvise music data | 15 | |
| IMP | Logotron Imagine Project (v4) | 6 | |
| IMP | Logotron Imagine Project (v5) | 11 | |
| IMP | PLS-CADD Import info | 3 | |
| IMP | Softbook Publisher eBook (v1.0) | 2 | |
| IMP | Softbook Publisher eBook (v1.5) | 9 | |
| IMPORT | Godot Engine Import settings | 206 | |
| IMR | Impromptu report | 10 | |
| IMR | Information Magic data file | 5 | |
| IMS | Adobe Premiere cache | 144 | |
| IMS | IMS Content Package | 9 | |
| IMS | Imaris IMS (H5) | 11 | |
| IMS | Imaris IMS (TIFF) | 10 | |
| IMS | IncrediMail Skin | 10 | |
| IMS | Lucas Arts iMUSE drivers | 34 | |
| IMW | IncrediMail sound (MIDI music) | 23 | |
| IMW | IncrediMail sound (WAV) | 18 | |
| IMX | Fable IMAX video | 4 | |
| IMX | Zoop game graphics | 31 | |
| IMX | iMindMap Map | 11 | |
| IMY | iMELODY sound/music | 12 | |
| IMY/IMELODY | iMELODY sound/music (header less) | 3 | |
| IMZ | Compressed Disk Image (password protected) | 14 | |
| IMZ | DFSee disk image | 7 | |
| IMZ | WinImage compressed disk image | 77 | |
| IN | CFAST input - data | 3 | |
| IN2D | 2D spline geometry | 13 | |
| IN2D | 2D spline geometry (with rem) | 3 | |
| INA | I'm Not Alone save game | 7 | |
| INC | SURFCAM toolpath (v4.0) | 36 | |
| INCD | InCopy Document | 8 | |
| IND | AOL thumbnails index | 5 | |
| IND | CA Visual Objects ADAM Index | 5 | |
| IND | MapInfo MapBasic data Index | 180 | Kieran O'Donnell |
| INDB | InDesign Book | 7 | |
| INDD/IND | InDesign Document (generic) | 90 | |
| INDEX | AmiAtlas Index | 3 | |
| INDEX | Amigaguide Index | 2 | |
| INDEX | ImageFinder Index | 8 | |
| INDEXES | Scrivener search Indexes | 3 | |
| INDK | InDesign Shortcuts set | 4 | |
| INDK | InDesign Shortcuts set (XML) | 18 | |
| INDL | InDesign Library | 2 | |
| INF | Adobe Type Manager Font Information | 91 | |
| INF | AutoRun Info | 19 | Thaimodz |
| INF | AutoRun Info (with rem) | 6 | Joerg Jenderek |
| INF | BConvert configuration (v1.xx) | 5 | |
| INF | CP Backup Info (v7.x) | 3 | |
| INF | MegaPaint INF | 2 | |
| INF | OS/2 Information Presentation Facility | 11 | |
| INF | The Norton AntiVirus Information | 5 | |
| INF | Windows Setup Information (generic) | 19 | |
| INF | Windows driver setup Information | 5 | |
| INF | Windows driver setup Information (Unicode) | 4 | |
| INF | Windows driver setup Information (Unicode, with rem) | 4 | |
| INF | Windows driver setup Information (with rem) | 5 | |
| INF | Wizzardz and War Lordz level game data | 15 | |
| INFINITEMACDISK | Infinite Mac disk image | 4 | |
| INFO | Amiga GlowIcon | 118 | |
| INFO | Amiga NewIcon | 839 | Ruggero Furlanetto |
| INFO | Amiga Workbench icon | 340 | |
| INFO | Fink Info-file | 16 | |
| INFO | Fink Info-file (with InfoN field) | 9 | |
| INFO | GNU Info document | 33 | |
| INFO | Guymager acquisition info log | 6 | |
| INFO | Libretro core Information | 47 | |
| INFO | Multibit wallet Info | 12 | |
| INFO | Scene Generator scene settings | 17 | |
| INFO | Vuforia QCAR Info | 2 | |
| INFO | ZoomBrowser Ex thumbnails | 13 | |
| INFO | p.OS-Workbench icon | 75 | |
| INI | Applause II settings (v1.5) | 2 | |
| INI | Atomic Bomberman settings | 2 | |
| INI | AutoCAD LT settings | 5 | |
| INI | Cjam settings | 4 | |
| INI | Cura profile settings (legacy) | 12 | |
| INI | Denise global settings | 3 | |
| INI | Derive state/configuration | 4 | |
| INI | Edsac Simulator PC settings | 2 | |
| INI | Everything settings | 4 | YFdyh000 |
| INI | FL Studio Dashboard component Initializaton | 47 | |
| INI | FastFiler settings | 3 | |
| INI | Foltyn Commander settings | 2 | |
| INI | Generic INI configuration | 17 | |
| INI | Hollywood project settings | 22 | |
| INI | Infinity Engine configuration | 36 | Sam. |
| INI | InstallShield Setup config | 15 | |
| INI | IrfanView batch advanced options settings | 8 | |
| INI | KISSlicer material settings | 46 | |
| INI | KISSlicer printer settings | 27 | |
| INI | KISSlicer style settings | 99 | |
| INI | KISSlicer support settings | 22 | |
| INI | Labeler (v2.0) / Labels Unlimited (v1.0) settings | 2 | |
| INI | LapLink 5 settings | 5 | |
| INI | Lucid 3-D settings (v1.x) | 2 | |
| INI | Lucid 3-D settings (v2.x) | 3 | |
| INI | METEX digital multimeter configuration | 2 | |
| INI | MIRAX slide data | 13 | |
| INI | MIRAX slide data (UTF-8) | 10 | |
| INI | Maptapper settings | 41 | |
| INI | McAfee VirusScan for Windows settings | 8 | |
| INI | MiSTer settings | 7 | |
| INI | Microsoft Project settings (v1.0) | 3 | |
| INI | Microsoft QBX local INI | 19 | |
| INI | Midnight Commander skin | 12 | |
| INI | Midnight Commander skin (with rem) | 7 | |
| INI | ModPlug Tracker settings | 4 | |
| INI | NCSA Mosaic configuration (generic) | 14 | |
| INI | NCSA Mosaic configuration (generic, with rem) | 5 | |
| INI | NLMSX machine configuration | 10 | |
| INI | Norton Commander configuration (v1-3) | 5 | |
| INI | OS/2 INI | 6 | |
| INI | Ozone GUI skin Info | 6 | |
| INI | PaintTool SAI Tool parameters | 24 | |
| INI | Picasa album info | 5 | |
| INI | Picasa info (generic) | 19 | |
| INI | PlatformIO project configuration | 6 | |
| INI | Popcorn Mail configuration | 8 | |
| INI | QuickSFV settings | 10 | |
| INI | RASTER Music Tracker settings | 3 | |
| INI | SBTimbre settings | 4 | |
| INI | ScummVM settings | 9 | |
| INI | Solace settings | 5 | |
| INI | Steem configuration | 9 | |
| INI | Superbase printer driver | 6 | |
| INI | TOPBENCH database | 3 | |
| INI | TOSBOX configuration | 4 | |
| INI | The Chessmaster 4000 layout | 11 | |
| INI | TraxMaker settings (v2.00) | 16 | |
| INI | Trumpet Windsock settings | 6 | |
| INI | Turbo Fractal Generator settings | 2 | |
| INI | Unreal Engine Crash report | 5 | |
| INI | VICE settings | 6 | |
| INI | Venus printer definition | 3 | |
| INI | Virtual APF settings | 3 | |
| INI | Visionaire Studio game settings | 15 | |
| INI | Volkov Commander configuration | 3 | |
| INI | VueScan settings | 4 | |
| INI | WS_FTP configuration | 6 | |
| INI | Win Trek settings | 2 | |
| INI | WinAPE configuration | 4 | |
| INI | WinFellow emulation preset | 8 | |
| INI | WinRIX configuration | 3 | |
| INI | Windows Boot Loarder information | 14 | |
| INI | Windows Initialization settings | 14 | |
| INI | Windows Initialization settings (32/64bit sys) | 4 | |
| INI | Windows system Initialization settings | 6 | |
| INI | Windows system Initialization settings (32/64bit sys) | 4 | |
| INI | X millennium emulator configuration | 4 | |
| INI | Xelitan Hex Editor File Structure Format | 8 | |
| INI | Xerox Rooms settings | 4 | |
| INI | Yape configuration | 3 | |
| INI | blueMSX machine settings | 82 | |
| INI | cdrtfe tools configuration | 2 | |
| INIR | FluxMyFluffyFloppy Read template | 23 | |
| INIW | FluxMyFluffyFloppy Write template | 9 | |
| INK | Mimio Notebook | 4 | |
| INP | InPage document | 8 | |
| INP | MAME Input (Extended Header) | 2 | |
| INP | MAME Input (Versioned Header) | 2 | |
| INP | UAE Input recorder data | 2 | |
| INS | InstaCalc spreadsheet (v2) | 12 | |
| INS | InstaCalc spreadsheet (v3) | 9 | |
| INS | InstallShield Script (1993) | 5 | |
| INS | InstallShield Script (1995) | 12 | |
| INS | InstallShield Script (1997) | 21 | |
| INS | MVSTracker Instrument | 145 | |
| INS | Novell 16-bit LAN driver Installer data | 43 | |
| INS/SMP | RJP / Vectordean instruments | 19 | |
| INS | Reality Adlib Tracker Instrument | 3 | |
| INS | THX Tracker instrument | 9 | |
| INS | WYZTracker Instruments | 4 | |
| INS | WordPerfect Install options | 3 | Joerg Jenderek |
| INS | Xtracker Instrument | 2 | |
| INSP | Insta360 Panoramic image bitmap | 44 | |
| INSPXEPROJ | Intel Inspector Project | 6 | |
| INSTALLLOG | .NET assembly Installation Log | 20 | |
| INSTALLSTATE | .NET assembly uninstaller info | 14 | |
| INSTR | Deluxe Sound sampled instrument | 3 | |
| INSTR | Sonix MIDI Instrument | 3 | |
| INSTR | Sonix sampled sound Instrument | 49 | |
| INSTR | Sonix synthesised Instrument | 5 | |
| INSTRUMENT | SuperJAM! Instrument | 48 | |
| INSV | Insta360 Video | 23 | |
| INT | Atari INT95a bitmap | 2 | |
| INT | Borland Interface unit | 4 | |
| INT | CBASIC Intermediate code | 7 | |
| INT | Epic ITS format | 4 | |
| INT | Fallout compiled script | 1277 | Kristopher Neidecker |
| INT | ITS international module | 6 | |
| INT | R.D.S. warrior load format (v0.8) | 7 | |
| INT | STK Interval List format | 8 | |
| INT | Windmill's encrypted KIF game data archive | 2 | |
| INX | Inkscape extension descriptor | 25 | |
| INX | Inkscape extension descriptor (UTF-8) | 4 | |
| INX | InstallShield Compiled Rules | 23 | |
| IO | Braveheart game data archive | 2 | |
| IOBJ | Visual Studio Intermediate Object | 24 | |
| IOC | Indicator Of Compromise | 37 | |
| IOC | OpenIOC Indicator Of Compromise | 4 | |
| IOC | OpenIOC Indicator Of Compromise (UTF-8) | 7 | |
| IOC | STM32CubeMX Configuration | 23 | |
| IOM | ZEMU IO Map | 6 | |
| IP | IconPackager theme | 20 | |
| IP | Interactive Physics data | 8 | |
| IP | Ipaint bitmap | 9 | |
| IP | MusicMaker Instrument | 21 | |
| IP2 | Interpress format | 14 | |
| IPA | iOS Application | 23 | |
| IPD | BlackBerry Backup | 5 | |
| IPDB | Visual Studio Internal Program Data Base | 20 | |
| IPE | Microth Stroke Set | 22 | |
| IPF | Information Presentation Facility markup | 25 | |
| IPF | Information Presentation Facility markup (with rem) | 18 | |
| IPF | Interchangeable Preservation Format floppy disk image | 45 | |
| IPF | Xilinx iMPACT Programming File (JEDEC) | 19 | |
| IPH/IPT | Interpaint bitmap | 2 | |
| IPJ | Autodesk Inventor Project | 9 | |
| IPJ | Impatica OnCue Project | 6 | |
| IPJ | Install Project (v3.0) | 4 | |
| IPJ | Irie Pascal Project (v2) | 45 | |
| IPJ | Profi Install Project (v2.0a) | 28 | |
| IPJ | Profi Install Project (v3.0c) | 10 | |
| IPK | Nintendo DS Packed Images | 3 | |
| IPK | Psion Organiser Pack image | 2 | |
| IPL | IPLab image sequence (type i) | 5 | |
| IPL | IPLab image sequence (type m) | 2 | |
| IPN | Autodesk Inventor Presentation | 40 | |
| IPR | Infinity2 Project | 6 | |
| IPR | InstallShield Project | 18 | |
| IPS | Apple crash report (generic) | 4 | |
| IPS/IPS32 | IPS32 Patch | 7 | |
| IPS | Image Analyst MKII Pipeline | 86 | |
| IPS | InstallShield Installation Package Strings table | 19 | |
| IPS | InstallShield Installation Package Strings table (UTF-16 LE) | 5 | |
| IPS | International Patching System binary patch | 4 | |
| IPSW | Apple iPod Software firmware update | 9 | |
| IPT | Autodesk Inventor Part | 1115 | |
| IPT | XnView IPTC template (v1) | 23 | Joerg Jenderek |
| IPTC | XnView IPTC template (XML) | 9 | Joerg Jenderek |
| IPUZ | ipuz puzzle open format | 5 | |
| IPV | ibisPaint Project | 6 | |
| IPX | IPexpress module manifest | 10 | |
| IPX | Ipix Spherical Panorama | 26 | |
| IPY/PY | IPython Notebook | 110 | |
| IPYNB | Jupyter Notebook | 15 | |
| IQE | Inter-Quake Export | 3 | |
| IQM | Inter-Quake Model (v2) | 4 | |
| IQP | IntelliQuilter Pattern (v2) | 14 | |
| IQY | Microsoft Web query | 21 | |
| IR | Flipper Zero IR library | 8 | |
| IR | Flipper Zero IR signals | 7 | |
| IR | divANS Intermediate Representation | 8 | |
| IRB | VarioCAM thermogram | 2 | |
| IRCP | IRIDAS Composite playlist | 6 | |
| IRD | PS3 ISO Rebuild Data (ungzipped) | 19 | |
| IRG | InfiRay raw IR Graphics (var.1) | 16 | |
| IRG | InfiRay raw IR Graphics (var.2) | 11 | |
| IRP | InfraRecorder Project | 8 | |
| IRR | Irrlicht 3D scene (UTF-16 LE) | 19 | |
| IRR | Irrlicht 3D scene (UTF-8) | 14 | |
| IRRMESH | Irrlicht Mesh | 7 | |
| IRRMESH | Irrlicht Mesh (UTF-16 LE) | 19 | |
| IRRMESH | Irrlicht Mesh (UTF-8) | 9 | |
| IRS | WordPerfect Input Resource | 3 | Joerg Jenderek |
| IRT | IRIT 3D model | 2 | |
| IS | Sound Invasion Music System module | 6 | |
| IS | Trilo Tracker Instrument Set | 9 | |
| IS20 | Sound Invasion Music System 2.0 module | 6 | |
| ISD | GraphPad InStat data (Windows) | 4 | |
| ISDOC | ISDOC electronic invoice | 16 | |
| ISDOC | ISDOC electronic invoice (UTF-8) | 23 | |
| ISE | Xilinx ISE Project settings and info | 28 | |
| ISF | Inspiration Software data | 23 | |
| ISF | Tektronix instrument data file | 2 | |
| ISH | ImageMaster Shape | 44 | |
| ISI | ISI/Web of Science citation format | 5 | |
| ISLANDS | AmiAtlas Islands data | 2 | |
| ISM | ISAM table handler data | 7 | Vincent van der Tuin |
| ISM | ITI SimulationX Encrypted Model | 63 | TBeu |
| ISM/MDL | Native Instruments GENERATOR Instrument / Macro | 334 | |
| ISM | VB/ISAM index (v2.0) | 5 | |
| ISMV | Individual Smooth Streaming Video | 9 | |
| ISO/DMG/TOAST | Apple Partition Map (APM) disk image | 11 | |
| ISO | ISO 9660 CD image | 71 | |
| ISO | IsoDraw Document | 5 | |
| ISO/UDF | UDF disc image | 12 | Joerg Jenderek |
| ISPAC | Integration Services Project Deployment File Format | 5 | |
| ISPD | Shimadzu LabSolutions IR FTIR Data | 3 | |
| ISPRO | InstallSimple Project | 5 | |
| ISPUBLICKEY | Issuing Signature Public Key | 3 | |
| ISS/XARC | FunCom ISS audio | 7 | |
| ISS | IMPlay Song (v2.0) | 160 | |
| ISS | Inno Setup Script | 13 | Christian Blackburn |
| ISS | Inno Setup Script (UTF-8) | 26 | |
| ISS | Inno Setup Script (with alt rem) | 3 | |
| ISS | Inno Setup Script (with rem) | 55 | Christian Blackburn |
| ISS | InstallShield Response File | 12 | |
| ISSIG | Issuing Signature (generic) | 8 | |
| ISSIG | Issuing Signature (v1) | 2 | |
| ISSIG | Issuing Signature (v2) | 3 | |
| IST | Adobe Image Styler file | 10 | |
| IST | Digitrakker Instrument | 2 | |
| IST | YSFlight Instrument panel | 4 | |
| IST | YSFlight Instrument panel (with rem) | 17 | |
| ISTG | Imagine Staging data | 7 | |
| ISU | InstallShield Uninstall Script | 18 | |
| ISW | Image Spectrumizer Workspace (v4.0) | 4 | |
| ISZ | ISo Zipped format | 4 | |
| IT | IceTracker module (v1.x) | 2 | |
| IT | Impulse Tracker module | 37 | |
| IT/MOD/S3M/XM | MMCMP compressed module | 7 | |
| ITA | IONTOF SurfaceLab TOF-SIMS Analysis | 8 | |
| ITA | IconTweaker theme | 5 | |
| ITC | iTunes CoverFlow data | 15 | |
| ITC2 | iTunes Cover Flow Data (v2) | 21 | |
| ITD | Alone in the Dark 2 save game | 95 | |
| ITD | Alone in the Dark save game | 28 | |
| ITEM | Neophyte Item | 54 | |
| ITG/ING/COT/CIT/RGB/RLE | Intergraph Raster bitmap | 5 | Joerg Jenderek |
| ITL | Expression Design Item List (v3) | 4 | |
| ITL | iTunes Music Library | 7 | |
| ITM | Diablo 1 Item safe file format | 530 | |
| ITM | IONTOF SurfaceLab TOF-SIMS Measurement | 27 | |
| ITM | Infinity Engine Item (v1) | 5929 | Sam. |
| ITM | Infinity Engine Item (v1.1) | 2 | |
| ITM | Infinity Engine Item (v2.0) | 2754 | Sam. |
| ITMX | XMILE XML Model Interchange Language | 26 | |
| ITN | QANTIM Itinerary | 4 | |
| ITR | Icy Tower Replay | 165 | |
| ITW | BMW TIS grayscale bitmap | 8 | |
| ITX | Imagine for DOS Texture | 14 | |
| ITX | Imagine for Windows Texture | 158 | |
| IUM | infoUSA Network Meter file | 9 | |
| IV | SGI Open Inventor Scene Graph (ASCII) | 22 | |
| IV | SGI Open Inventor Scene Graph (binary) | 7 | |
| IVC | Expression Media Catalog | 4 | |
| IVD | Interactive AVI data | 11 | |
| IVE | OpenSceneGraph legacy binary format | 6 | |
| IVF | IVF VP8 Video | 61 | |
| IVF | IVF Video (generic) | 3 | |
| IVF | Intel Indeo Video File | 14 | |
| IVG | IconVG vector graphics | 10 | |
| IVML | INDENICA Variability Modelling Language | 27 | |
| IVR | RealNetworks Internet Video Recording (collection) | 2 | |
| IVR | RealNetworks Internet Video Recording (single) | 3 | |
| IVU | ImmerVision XML user interface | 5 | |
| IVY | Ivy module descriptor | 4 | |
| IW | IconAuthor flowchart (generic) | 28 | |
| IW2 | Information Workshop 2000 data file | 9 | |
| IW5DLC | Call of Duty Modern Warfare 3 DLC | 4 | |
| IWC | WaveL bitmap | 22 | |
| IWD | Call Of Duty map - game data archive | 11 | |
| IWI | Infinity Ward Image bitmap | 8 | |
| IWL | Autodesk Inventor Wire Library | 41 | |
| IWS | Information Workshop data file | 3 | |
| IX1/IXP | BankMate Activity data | 2 | |
| IXH | File Express Index Header | 4 | |
| IXL | DB/TextWorks Database Indexed List | 7 | |
| IXS | Ixalance module | 24 | |
| IZE/FKY/FTX/KEY/ORD/TIX/TKY/TPT/_01/_02 | IZE data (generic) | 34 | |