FILE EXTENSIONS START FROM LETTER - 'I', FILE SUFFIX START FROM ALPHABET - 'I'
Ext. | Description | Used by |
I | Preprocessor output file | Borland C Preprocessor |
IAK | Internet Access Kit | |
IAM | Assembly file | Autodesk Inventor |
IAX | Bitmap graphics (IBM Image Access eXecutive) | |
IAX | data | InstallAnywhere.NET project |
IBG | PDS graphic file | |
IBM | Archive (Internal IBM only) | ARCHDOS |
ICA | Bitmap graphics (Image Object Content Architecture) | |
ICB | Bitmap graphics | |
ICC | ICC configuration | |
ICE | Archive | Cracked LHA (old LHA) |
ICM | ICC configuration | |
ICN | ICON source code file | |
ICO | Icon file | ICONEDIT.EXE; Microsoft Windows |
ID | Disk identification file | |
IDB | IDA database | IDA |
IDB | VC++ Minimum Rebuild Dependency File | |
IDC | IDA C language source | IDA |
IDE | Borland C++ 4.x IDE project | BCW.EXE |
IDF | MIDI instrument description | |
IDS | IDA imported names format | IDA |
IDW | Vector graphics | IntelliDraw |
IDW | Drawing file | Autodesk Inventor |
IDX | Index | |
IFD | Form | JetForm Design |
IFF | Interchange Format File (IFF) | EA Software - Convert (C) Villena - Amiga |
IFF | Sun TAAC Image File Format | SDSC Image Tool |
IFP | Script | KnowledgeMan |
IFS | Fractal image compressed file | Yuvpak |
IFS | Iterated fractal system file | |
IFS | Installable file system | |
IGES | ||
IGF | Inset Systems | GCGW |
IGC | Flight tracks downloaded from GPS devices in the International Gliding Commission's prescribed format | |
IHP | Watcom help file | whelp.exe |
IHS | Inbound History | Bink/+ |
IIW | Power Point Image Importer Wizard | |
IL | hDC Designer Icon Lin dll format | |
ILB | Data | Scream Tracker |
ILG | data | LaTeX Index Generation log |
ILK | Outline of program's format | Microsoft ILink incremental linker |
IM | Auran Jet indexed mesh file | Trainz |
IM8 | Sun raster graphics file | |
IMA | Mirage vector graphics | EGO - Chart - Autumn |
IMG | ADEX graphic file | |
IMG | Disk Image | NC 5.0 |
IMG | GEM bitmapped graphics file | Ventura |
IMG | TeraByte, Inc. dba TeraByte Unlimited | |
IMG | Vivid IMG file | |
IMI | image | |
IMI | image | |
IMP | Spreadsheet | Lotus Improv |
IMQ | Image presentation | ImageQ |
IN$ | Installation file | HP NewWave |
IN3 | Input device driver | Harvard Graphics 3.0 |
INB | Test script | Vermont HighTest |
INC | Include file | several programming languages |
IND | Data Index | dBASE IV |
INDD | InDesign Document | |
INF | Information text file (ASCII) | |
INF | Install script | |
INF | VIEW.EXE | |
INF | Type 1 LaserJet font information file | soft font installers |
INFO | ||
INFO | Icon Data (Amiga) | |
INGR | Intergraph Raster File Format | |
Initialization file | ||
INK | Pantone reference fills file | CorelDRAW |
INS | Data | |
INS | Ensoniq Instrument File | Ensoniq |
INS | Installation script | 1st Reader |
INS | Instrument music file (Adlib) | |
INT | Borland Interface Units | |
INT | Program saved in Internal (semi-compiled) format | Signature |
INT | Source of Borland interface module | |
INX | Index | Foxbase |
IO | Archive | CPIO |
IOB | 3d graphics database in TDDD format | |
IOC | Organizational chart | Instant ORGcharting! |
ION | 4DOS descript.ion file (file descriptions) | 4DOS |
IP | Immortal Player file | Immortal Player |
IPC | Intellitec Program Configuration - used to configure vehicle electronics | Intellitec |
IPF | Interchangeable Preservation Format | SoftPres |
IPG | iPod game file | iTunes and iPod |
IPH | Hi-Res Image | InterPaint |
IPL | Pantone Spot reference palette file | CorelDRAW |
IPN | Intecplan project | Intecplan Business Plan Software |
IPS | IPS Patching Format (International Patching System) | |
IPT | Part file | Autodesk Inventor |
IPT | MultiColor Image | InterPaint |
IRS | Resource (WordPerfect) standard.irs | WordPerfect |
IRT | Data | IRIT 3D model |
IRTR | Graphicon-2000 Interactive Real-Time PHIGS | |
ISD | Spelling Checker dictionary | RapidFile |
ISH | Archive | ISH |
ISMA | Output Video file | Islam Abusa'a Software |
ISO | ||
IST | Digitrakker Instrument File | AWAVE |
IT | Impulse Tracker music file | Impulse Tracker |
IT | Settings | intalk |
ITF | Interface file | |
ITL | iTunes music library | |
ITN | Itinerary file | TomTom PNDs |
ITT | IconTweaker Theme | |
IV | SGI Inventor | |
IV-VRML | Inventor VRML Format | |
IVE | ||
IVI | Image file | ImmerVision |
IVL | Lensflare file | ImmerVision |
IVP | Panorama file | ImmerVision |
IVU | User Interface file | ImmerVision |
IW | Presentation flowchart | IconAuthor - HSC InterActive |
IWA | Text file | IBM Writing Assistant |
IWB | Information WorkBench | Prodeo |
IWD | Call of Duty Map - Game Data Archive | Activision, Inc. |
IWP | Text file | Wang |
IX | data | dtSearch index |
IZT | Izl binary token file | IZL |
