| File extension |
File description |
Developer/Producer |
| .i |
Visual Studio Intermediate File |
Microsoft |
| .i00 |
DVD Shrink Part 1 File |
DVD Shrink |
| .i01 |
DVD Shrink Part 2 File |
DVD Shrink |
| .i02 |
DVD Shrink Part 3 File |
DVD Shrink |
| .i3d |
Houdini Image 3D File |
Side Effects |
| .i3pack |
Point Blank Game Data File |
Zepetto |
| .i5z |
IUCLID 5 Import/Export File |
IUCLID |
| .iaa |
INTUS Audio Archive |
PCS Systemtechnik |
| .iaf |
Outlook Internet Account File |
Microsoft |
| .iam |
Inventor Assembly File |
Autodesk |
| .ias |
Intermodulation Analysis System File |
Professional Wireless |
| .ib |
InterBase Database |
Embarcadero Technologies |
| .ib2 |
IncrediBots 2 Saved Challenge File |
IncrediBots |
| .ib3 |
IncrediBots 3 Saved Challenge File |
IncrediBots |
| .iba |
iBooks Author Document |
Apple |
| .ibatemplate |
iBooks Author Document Template |
Apple |
| .ibb |
ImgBurn Project File |
Lightning UK! |
| .ibcd |
InstantBingoCard Document |
InstantBingoCard.com |
| .ibooks |
Multi-Touch iBook |
Apple |
| .ibp |
IsoBuster Managed Image Information File |
Smart Projects |
| .ibplugin |
Interface Builder Plug-in |
Apple |
| .ibq |
IsoBuster Managed Image File |
Smart Projects |
| .ibro |
IncrediBots Robot File |
IncrediBots |
| .ibt |
Texture and Model File |
Eidos |
| .ic1 |
Low Resolution Imagic Graphics File |
Atari |
| .ic2 |
Medium Resolution Imagic Graphics File |
Atari |
| .ic3 |
High Resolution Imagic Graphics File |
Atari |
| .ic3d |
IC3D Scene File |
IronCAD |
| .ica |
Citrix ICA File |
Citrix |
| .ical |
iCalendar File |
N/A |
| .icalendar |
iCalendar File |
N/A |
| .icalevent |
iCal Event File |
Apple |
| .icaltodo |
iCal To Do File |
Apple |
| .icap |
InCopy Package File |
Adobe Systems |
| .icb |
Targa ICB Bitmap Image |
Avid Technology |
| .icbu |
iCal Backup File |
Apple |
| .icc |
ICC Profile |
N/A |
| .icd |
Installable Client Driver File |
Microsoft |
| .ice |
ICE File Archive |
N/A |
| .icf |
Zoom Router Configuration File |
Zoom Telephonics |
| .icg |
Image Comparer Gallery File |
Bolide Software |
| .ichat |
iChat Saved Chat Log |
Apple |
| .icl |
Windows Icon Library File |
Microsoft |
| .icm |
Image Color Matching Profile |
N/A |
| .icma |
InCopy Assignment File |
Adobe Systems |
| .icml |
InCopy Document |
Adobe Systems |
| .icn |
Windows Icon File |
N/A |
| .icns |
Mac OS X Icon Resource File |
Apple |
| .ico |
Icon File |
N/A |
| .icon |
Icon Image File |
N/A |
| .iconpackage |
IconPackager Theme File |
Stardock |
| .icontainer |
CandyBar iContainer File |
Panic |
| .icpr |
IconUtils Project File |
Aha-Soft |
| .icr |
Image Comparer Results File |
Bolide Software |
| .ics |
iCalendar File |
N/A |
| .icursorfx |
iCursor Effect File |
GioFX |
| .id |
Lotus Notes User ID File |
IBM |
| .id2 |
Windows Live Messenger Emoticon File |
Microsoft |
| .idap |
Adobe InDesign Assignment Package |
Adobe Systems |
| .idb |
Visual Studio Intermediate Debug File |
Microsoft |
| .idc |
Internet Database Connector File |
Microsoft |
| .ide |
Inventor iFeature File |
Autodesk |
| .idea |
Adobe Ideas Document |
Adobe Systems |
| .idf |
MIDI Instrument Definition File |
N/A |
| .idl |
Interface Definition Language File |
Microsoft |
| .idlk |
Adobe InDesign Lock File |
Adobe Systems |
| .idml |
Adobe InDesign Markup Language File |
Adobe Systems |
| .idms |
Adobe InDesign Snippet |
Adobe Systems |
| .idpk |
Adobe InDesign Package for GoLive File |
Adobe Systems |
| .idpp |
Adobe InDesign Preflight Profile |
Adobe Systems |
| .idt |
Windows Installer Database Text Archive File |
Microsoft |
| .idv |
Inventor Design View File |
Autodesk |
| .idw |
Inventor Drawing |
Autodesk |
| .idx |
Movie Subtitle File |
N/A |
| .idx0 |
Runescape Cache Index File |
Jagex |
| .idx255 |
Runescape Cache File |
Jagex |
| .ies |
IES Photometric Data File |
Illuminating Engineering Society |
| .if |
Procedimientos-Uno IFWin Project File |
Procedimientos-Uno |
| .ifaith |
iFaith SHSH File |
iH8sn0w |
| .ifc |
Industry Foundation Classes File |
BuildingSMART |
| .ifcxml |
Industry Foundation Classes XML File |
N/A |
| .ifczip |
Compessed IFC File |
N/A |
| .ifd |
InForm Document |
Fly Software |
| .iff |
Interchange File Format |
Electronic Arts |
| .ifl |
3ds Max Image File List |
Autodesk |
| .ifo |
DVD-Video Disc Information File |
N/A |
| .ifp |
GTA Animation File |
Rockstar Games |
| .ifs |
InfoSlips Package |
InfoSlips |
| .ifw |
INTUS Firmware File |
PCS Systemtechnik |
| .igc |
Anime List Builder Input File |
IGC |
| .iges |
IGES File |
N/A |
| .igg |
SuiteProfiler Color Map File |
Dana Foy |
| .igm |
Indigo Renderer Material File |
Glare Technologies |
| .igma |
INTUS Graph Mask Archive |
PCS Systemtechnik |
| .ign |
RoboHelp Ignore List File |
Adobe Systems |
| .igp |
Igor Published Music Notation File |
NoteHeads |
| .igr |
Igor Engraver File |
NoteHeads |
| .igs |
IGES Drawing File |
N/A |
| .igt |
iGrafx Document Template |
iGrafx |
| .igx |
iGrafx Document |
iGrafx |
| .ihw |
IN-HEH Timeline Workspace |
IN-HEH |
| .ihx |
IN-HEH Timeline Database |
IN-HEH |
| .ii |
IconWorkshop Extended Information File |
Axialis Software |
| .iif |
Intuit Interchange Format File |
Intuit |
| .iil |
CleanSweep Installation Log |
N/A |
| .iim |
iMacro Macro File |
iOpus |
| .iip |
Install Creator Pro Project File |
Clickteam |
| .iiq |
Phase One RAW Image |
Phase One |
| .iit |
Install Creator Project File |
Clickteam |
| .iix |
Translation Memory Index File |
SDL |
| .ik |
CryENGINE IK Animation File |
Crytek |
| .ikf |
INTUS Keyboard File |
PCS Systemtechnik |
| .ilbm |
Interleaved Bitmap Image |
Electronic Arts |
| .ildoc |
QuickSilver Document |
BroadVision |
| .ilk |
Incremental Linking File |
Microsoft |
| .ima |
Sage ACT! Email Message |
Sage |
| .image |
Apple Disk Image |
N/A |
| .imapmbox |
IMAP Mailbox |
Apple |
| .imd |
GIS Image Metadata File |
N/A |
| .ime |
Windows Input Method Editor File |
Microsoft |
| .imf |
Id Music File |
id Software |
| .img |
Macintosh Disk Image |
Apple |
| .img3 |
iPhone IMG3 File |
Apple |
| .imga |
Aleph One Image File |
Bungie Studios |
| .imi |
Magellan Map File |
Magellan |
| .imj |
JFIF Bitmap Image |
Pegasus Image Corporation |
| .iml |
IntelliJ IDEA Module |
JetBrains |
| .immodules |
GTK+ Module File |
N/A |
| .imovieproj |
iMovie Project File |
Apple |
| .imovieproject |
iMovie Project |
Apple |
| .imp |
Audition Impulse File |
Adobe Systems |
| .imr |
Impromptu Report File |
IBM |
| .imt |
My Time Data File |
Intuit |
| .imy |
iMelody Ringtone File |
N/A |
| .imz |
WinImage Compressed Disk Image |
Gilles Vollant |
| .in |
Spyware File |
N/A |
| .inc |
Include File |
N/A |
| .inca |
InCopy CS3 Assignment File |
Adobe Systems |
| .incd |
InCopy Document |
Adobe Systems |
| .incp |
InCopy CS3 Package File |
Adobe Systems |
| .inct |
InCopy Template |
Adobe Systems |
| .incx |
InCopy CS3 Interchange File |
Adobe Systems |
| .ind |
Memory Stick Formatting File |
Sony |
| .indb |
Adobe InDesign Book File |
Adobe Systems |
| .indd |
Adobe InDesign Document |
Adobe Systems |
| .indesignplugin |
Adobe InDesign Plug-in |
Adobe Systems |
| .indk |
Adobe InDesign Shortcut Set File |
Adobe Systems |
| .indl |
Adobe InDesign Library |
Adobe Systems |
| .indp |
Adobe InDesign CS3 Package File |
Adobe Systems |
| .inds |
Adobe InDesign Snippet File |
Adobe Systems |
| .indt |
Adobe InDesign Template |
Adobe Systems |
| .inetloc |
Internet Location |
N/A |
| .inf |
Setup Information File |
N/A |
| .info |
ZoomBrowser Image Index File |
Canon |
| .infopathxml |
Microsoft InfoPath Form |
Microsoft |
| .inf_loc |
Windows Driver Information Cache File |
Microsoft |
| .ing |
MasterCook Ingredients File |
N/A |
| .ini |
Windows Initialization File |
N/A |
| .ink |
Mimio Ink Data File |
Mimio |
| .inl |
C++ Inline File |
Microsoft |
| .inlk |
Adobe InDesign Lock File |
Adobe Systems |
| .inm |
FaxMaster Document |
N/A |
| .inms |
Adobe InDesign Menu Set File |
Adobe Systems |
| .ino |
Arduino Sketch File |
Arduino |
| .inp |
Abaqus Input File |
Dassault Systemes |
| .inprogress |
Time Machine Backup Progress File |
Apple |
| .ins |
Internet Settings File |
Microsoft |
| .int |
SGI Integer Image |
Silicon Graphics |
| .internetconnect |
Apple Internet Connect Document |
Apple |
| .inv |
INVedit File |
Copyboy |
| .inx |
Adobe InDesign Interchange File |
Adobe Systems |
| .iobit |
Advanced SystemCare Rollback File |
IObit |
| .ion |
File Description File |
N/A |
| .ioplist |
Mac OS X IOPLIST File |
Apple |
| .ip |
IconPackager Theme File |
Stardock |
| .ipalias |
iPhoto Alias File |
Apple |
| .ipcc |
iPhone Carrier Bundle |
Apple |
| .ipch |
Intellisense Precompiled Header File |
Microsoft |
| .ipd |
BlackBerry Backup File |
Research In Motion |
| .ipf |
SMS Installer Script |
Microsoft |
| .ipg |
iPod Game File |
Apple |
| .iphoto |
iPhoto Library File |
Apple |
| .iphotoproject |
iPhoto Print Project |
Apple |
| .ipick |
iPick Football Image |
iPick Sports |
| .ipj |
Inventor Project File |
Autodesk |
| .ipk |
Itsy Package |
N/A |
| .ipl |
GTA Item Placement File |
Rockstar Games |
| .iplb |
iPhoto Library Archive Document |
Apple |
| .ipmeta |
Apple iPhoto Metadata File |
Apple |
| .ipn |
Inventor Presentation File |
Autodesk |
| .ipod |
Rockbox Firmware File |
Rockbox |
| .ipp |
Inline Guard Macro File |
N/A |
| .ipr |
InstallShield Professional Project File |
Flexera Software |
| .iproject |
iClone Project File |
Reallusion |
| .ips |
Internal Patching System Patch File |
N/A |
| .ipspot |
iPhoto Spot File |
Apple |
| .ipsw |
iPod and iPhone Software Update File |
Apple |
| .ipt |
Inventor Part File |
Autodesk |
| .iptheme |
IconPackager Raw Theme File |
Stardock |
| .ipx |
IPIX Image |
Minds-Eye-View |
| .iqy |
Internet Query |
Microsoft |
| .ircp |
SpeedGrade IRIDAS Composite File |
Adobe Systems |
| .irf |
CCTV DVR H.264 Video File |
iVIEW Technology |
| .irock |
intelliRock Sensor Data File |
Engius |
| .iros |
Adobe Save For Web Settings File |
Adobe Systems |
| .irp |
Internet Researcher Project File |
Zylox Software |
| .irr |
Brewer Lamp File |
Brewer Data Management Software |
| .irs |
Adobe Save For Web Settings |
Adobe Systems |
| .irx |
Brewer Irradiation File |
Brewer Data Management Software |
| .is1 |
M3 Sakura Real-Time Save 1 File |
M3 Sakura |
| .isc |
Xilinx Device Configuration File |
Xilinx |
| .isd |
Flexera InstallShield Dialog Box File |
Flexera Software |
| .ise |
InstallShield Express Project File |
Flexera Software |
| .isf |
Inspiration Flowchart Document |
Inspiration |
| .ish |
ISH Compressed Archive |
N/A |
| .ish1 |
Animation-ish Wiggledoodle-ish Document |
FableVision |
| .ish2 |
Animation-ish FlipBook-ish Document |
FableVision |
| .ish3 |
Animation-ish Advanced-ish Document |
FableVision |
| .ism |
IIS Smooth Streaming Manifest File |
Microsoft |
| .isma |
IIS Smooth Streaming Audio File |
Microsoft |
| .ismc |
Smooth Streaming Client Manifest File |
Microsoft |
| .ismclip |
iStopMotion Animation Clip |
Boinx Software |
| .ismv |
IIS Smooth Streaming Video File |
Microsoft |
| .isn |
Installer Source Files |
N/A |
| .iso |
Disc Image File |
N/A |
| .isoz |
Compressed Arbortext IsoDraw Illustration |
PTC |
| .isp |
IIS Internet Service Provider Settings |
Microsoft |
| .ispc |
Image Surfer Pro Collection File |
Surfing After Dark |
| .isr |
GoMoku Game File |
N/A |
| .iss |
InstallShield Silent Response File |
Flexera Software |
| .ist |
InstallShield Project Template File |
Flexera Software |
| .isu |
InstallShield Uninstaller Script |
Flexera Software |
| .isz |
Zipped ISO Disk Image |
EZB Systems |
| .it |
Impulse Tracker Module |
N/A |
| .ita |
IconTweaker Theme Archive |
Joost Verburg |
| .itc |
iTunes Cover Flow Data File |
Apple |
| .itc2 |
iTunes Cover Flow Data File 2 |
Apple |
| .itdb |
iTunes Database File |
Apple |
| .ite |
iTunes Extras File |
Apple |
| .itemdata-ms |
Windows 8 Start Screen Item Data File |
Microsoft |
| .ithmb |
iPod and iPhone Photo Thumbnails File |
Apple |
| .iti |
Impulse Tracker Instrument |
N/A |
| .itk |
ScummVM Game Data File |
ScummVM |
| .itl |
iTunes Library File |
Apple |
| .itlp |
iTunes LP Album File |
Apple |
| .itls |
iTunes Live Stream URL |
Apple |
| .itm |
iThink Model File |
isee systems |
| .itms |
iTunes Music Store Link File |
Apple |
| .itmsp |
iTunes Store Package |
Apple |
| .itn |
TomTom Navigator Itinerary File |
TomTom International |
| .itpc |
iTunes Podcast Link File |
Apple |
| .itr |
Icy Tower Replay File |
Muskedunder Interactive |
| .its |
Impulse Tracker Sample |
N/A |
| .itt |
IconTweaker Theme File |
Joost Verburg |
| .itw |
InTouch With Database File |
Prairie Group |
| .itx |
ITX Form Template |
IBM |
| .iup |
Fritz Update File |
ChessBase |
| .ius |
InfoTMIC Firmware Update File |
Shanghai InfoTM Microelectronics |
| .iv |
Open Inventor Scene Graph File |
Visualization Sciences Group |
| .iv2i |
Norton Ghost Incremental Virtual Volume Image |
Symantec |
| .iva |
Surveillance Video File |
N/A |
| .ivc |
InteliSea Vessel Configuration File |
InteliSea |
| .ivd |
Bitdefender Incremental Virus Definitions File |
Bitdefender |
| .ive |
OpenSceneGraph Binary File |
OSG Community |
| .ivf |
Indeo Video Format File |
Intel |
| .ivr |
Internet Video Recording |
RealNetworks |
| .ivs |
Initialization Vector File |
N/A |
| .ivt |
Beyond 20/20 Table File |
Beyond 20/20 |
| .ivue |
Live Picture IVUE Image |
HSC Software |
| .iw |
Chain Engineering Database File |
IWIS |
| .iwd |
Call of Duty Game Data File |
Activision |
| .iwdgt |
iWeb Widget File |
Apple |
| .iwi |
Infinity Ward Texture File |
Activision |
| .iws |
IntelliJ IDEA Web Page |
JetBrains |
| .iwxdata |
iWorx Data File |
iWorx Systems |
| .iwz |
InstallShield Express 2 Project File |
Flexera Software |
| .ix |
dtSearch Index File |
dtSearch |
| .ix2 |
WordPerfect Address Book File |
Corel |
| .ixa |
Ulead Disc Image format |
Corel |
| .ixb |
Ulead Disc Image |
Corel |
| .ize |
IZArc Archive |
IZArc |
| .izz |
Isadora Media Control Project |
TroikaTronix |
| .izzy |
Isadora Project |
TroikaTronix |
