List of filename extensions / I
This list contains common file name extensions that are used in some operating systems to differentiate between file formats . In other operating systems, file type identification is mainly carried out using the file header, and the MIME type is more important than the file name extension for e-mail attachments . Systems that use the latter two approaches usually ignore the extension completely.
| Filename extension | MIME type | Full name | Remarks, usage |
|---|---|---|---|
| .i | Intermediate | Borland C ++ | |
| .iaf | Microsoft Outlook and Outlook Express e-mail accounts backup file | ||
| .I am | Inventor Assembly | Autodesk Inventor assembly (3D CAD for mechanical engineering) | |
| .ian | Text file | Sterling Software Groundworks COOL Business Team Model | |
| .iax | bitmap | IBM Image Access eXecutive | |
| .ibm | ARCHDOS | compressed file archive, IBM Internal | |
| .ibq and .ibp | Partial files of processed image files that were created with IsoBuster . | IsoBuster Image | |
| .ic3d | 3D scene file - without internal math | COMPOSE 3D viewer | |
| .ica | Bitmap graphic | Image Object Content Architecture | |
| .ica | Citrix connection file | contains the parameters for connecting a client to a Presentation Server | |
| .icb | Targa bitmap | - | |
| .icbu | iCal backup | ICal archive format (Mac OS X) | |
| .icc | Catalog file | IronCad, INOVATE, COMPOSE | |
| .icc | Printer file | Kodak | |
| .icd | 2D drawing file | IronCad | |
| .icd | - | Actually executable file encrypted by SafeDisc 1 | |
| .icl | Icon Library | Library with symbol images (icons) | |
| .icm | Image color matching profile | - | |
| .icn | Icon set | for GEM (for PC-compatible DOS and Atari ST ) | |
| .icn | Icon source code | - | |
| .ico | image / vnd.microsoft.icon | Icon | Screen icon under Windows |
| .ics | 3D scene file | IronCad, INOVATE | |
| .ics | text / calendar | ICalendar file | Various calendar programs ( RFC 5545 ) |
| .id | Disk identification file | Generic | |
| .idb | Intermediate file | Microsoft Developer | |
| .idd | Instrument Definition Data (?) | MIDI instrument definition | |
| .ide | Project file | Borland C ++ v4.5 | |
| .ide | - | Installation file for objects in the game GTA | |
| .idf | MIDI instrument definition | ||
| .idif | Identification file | Netscape saved address book | |
| .idq | Data query | Internet | |
| .idt | Exported Windows Installer database table | - | |
| .idu | Exchange file | Interleaf Desktop Utility | |
| .idw | Vector graphic | IntelliDraw | |
| .idw | Inventor Drawing | Autodesk Inventor drawing (3D CAD for mechanical engineering) | |
| .idx | Index file | Microsoft Clip Gallery v. 1.x | |
| .idx | Index file | Pro / Engineer | |
| .idx | - | Microsoft Outlook Express Mailbox | |
| .idx | Relational database index | Microsoft FoxPro | |
| .idx | Relational database index | Symantec Q&A | |
| .idx | Java applet cache index | Java plug-in control panel | |
| .ifb | Internet Free Busy (IFB) | Status information free / occupied according to RFC 2445 for CalDAV | |
| .ifc | Industry Foundation Classes (IFC) | buildingSMART data model; model-based data exchange in construction | |
| .ifd | shape | JetForm design | |
| .iff | Interchange File Format (IFF) | Container format (Amiga), in principle any data, mostly image data (ILBM) or audio files (8SVX) | |
| .ifo | information | DVD video data | |
| .ifo | Graphic object layer data | ImageForge Pro | |
| .ifp | Script file | KnowledgeMan | |
| .ifs | Compressed fractal image | Yuvpak | |
| .ifs | Create executable library | ImageForge / ImageForge Pro | |
| .ifs | System file | OS / 2 | |
| .igs .iges | application / iges, model / iges | Initial Graphics Exchange Specification ( IGES ) | Generic |
| .igc | Glider logger file | GPS coordinates for displaying the flight path | |
| .igf | Metafile | Inset Systems | |
| .iif | Interchange file | QuickBooks for Windows | |
| .iii | application / x-iphone | Intel I-Phone compatible | Intel I-Phone - related to Microsoft NetMeeting |
| .iim | Music module | - | |
| .ila | - | can be read with the LohnViewer (wage and salary slips) from Datev | |
| .ilb | - | Scream Tracker data file | |
| .ilbm | bitmap | pixel-oriented image files | |
| .ild | File for laser show | ||
| .ildoc | document | Interleaf | |
| .ili | INTERLIS | Data description file according to INTERLIS specification | |
| .ilk | incremental left | Microsoft ILink Program outline | |
| .im8 | Raster graphic | Sun Microsystems | |
| .ima | application / x-ima | image | WinImage |
| .ima | application / dicom | DICOM image | - |
| .ima | Vector graphic | EGO, chart | |
| .imf | MIDI music file | Corridor 7, Blake Stone, Wolfenstein 3D, Spear of Destiny | |
| .img | DICOM image | - | |
| .img | Bitmap graphic | GEM, also Ventura Publisher | |
| .img | short for "image" | CD image created with CloneCD | |
| .img | image | Floppy image | |
| .img | File archive | File archive of GTA III and GTA Vice City (file container only) and GTA San Andreas (integrated file list) | |
| .imp | Spreadsheet | Lotus Improv | |
| .imq | Image presentation | ImageQ | |
| .ims | Create executable library | IconForge | |
| .imz | WinImage | WinImage file | |
| .in $ | Installation file | HP NewWave | |
| .in3 | Input device driver | Harvard Graphics v3.0 driver | |
| .inb | Test script | Vermont High Test | |
| .inb | - | Rebel Assault backup file | |
| .inc | Include file | Assembler language, Active Server (Pages) or PHP include file | |
| .inc | Include file | Pascal, Borland Delphi, C, C ++ SourceCode for multiple reuse in source code files | |
| .inc | - | NetInstall scriptfile | |
| .ind | index | dBase IV | |
| .ind | Shared database file | Specifically in Microsoft Windows | |
| .indb | InDesign Book | Adobe InDesign book document | |
| .indd | InDesign Document | Adobe InDesign document | |
| .indl | InDesign Library | Adobe InDesign library | |
| .indt | InDesign template | Adobe InDesign template | |
| .inf | application / inf | Setup information | Provides device / software installation information for Windows |
| .inf | Type I LaserJet font information | - | |
| .info | pictogram | Amiga icon for files with information such as B. Location of the file on the desktop | |
| .ini | Bank setup file | Gravis UltraSound | |
| .ini | Setup file | MWave DSP synth's mwsynth.ini GM | |
| .ini | text / x-ini | Initialization file | Configuration file for programs under MS-DOS , FreeDOS , DR-DOS and Windows |
| .ink | Pantone reference fills file | CorelDRAW | |
| .inl | Inline function file | Microsoft Visual C ++ | |
| .in O | Arduino file | Source code for the Arduino IDE for programming microcontrollers | |
| .inp | Help file for Sony camera videos | ||
| .inp | Source code for form, | Oracle, version 3.0 and earlier | |
| .inrs | INRS-Telecommunications audio | - | |
| .ins | Data file | WordPerfect for Windows | |
| .ins | Install script | InstallShield | |
| .ins | Installation script | 1st reader | |
| .ins | Instrument file | Ensoniq EPS Family | |
| .ins | Instrument music file | Adlib | |
| .ins | sample | Cell / II MAC / PC instruments | |
| .ins | application / x-internet-signup | Sign-up file | X internet |
| .int | Interface units | Borland | |
| .int | Intermediate executable code | Produced when a source program is syntax checked | |
| .int | Help file for Sony camera videos | ||
| .inx | InDesign Interchange | Exchange and repair format for Adobe InDesign | |
| .inx | Index file | Foxbase | |
| .io | Compressed archive | Cpio | |
| .iob | 3D graphics database | TDDD format (3D data description) | |
| .ioc | Organizational chart | Instant ORGcharting! | |
| .iof | Findit document | Microsoft Findit | |
| .ion | file descriptions |
4DOS descript.ion (text file), contains file descriptions
|
|
| .iop | ISOBUS object pool | wtk mask generator 2 | |
| .ipa | iOS App Store Package | Applications for devices with Apple iOS operating system | |
| .ipf | Interchangeable Preservation Format | Archive format for data carriers | |
| .ipl | Pantone Spot reference palette | CorelDRAW | |
| .ipl | - | Map file for the game GTA | |
| .ips | International patching system | binary patch file | |
| .ipsw | iPod and iPhone Software Update File | ||
| .ipt | Inventor Part | Autodesk Inventor part (3D CAD for mechanical engineering) | |
| .ipynb | Jupyter Notebook | The development of the format began in the IPython project , hence the "i". | |
| .iqf | Program data | Program for DDC controller TREND generated by ACE | |
| .iqy | Internet inquiry | Microsoft Internet Information Server | |
| .iq2 | Program data | Program for DDC controller TREND, generated by SET | |
| .irr | Wisp 3D | C ++ based engine for 3D games | |
| .irs | Resource file | WordPerfect for Windows | |
| .isd | Spell checker dictionary | RapidFile | |
| .ish | Compressed archive | ISH | |
| .iso | ISO | International-Organization-for-Standardization table | |
| .iso | application / x-iso9660-image, application / x-cd-image |
ISO 9660 file system | CD image with ISO 9660 file system |
| .isp | application / x-internet-signup | Sign-up file | X internet |
| .is | I n st rument | Instrument file of the digital tracker | |
| .isu | Uninstall script | InstallShield | |
| .it | audio / it | I mpulse T racker | Impulse tracker tracker module ( music format ) |
| .it | Settings file | intalk | |
| .itc | i T unes C overs | iTunes cover file | |
| .itf | Interfaces file | JPI Pascal TopSpeed | |
| .itl | i T unes L ibrary | iTunes media library file | |
| .iti | I mpulse T racker I instrument | Impulse Tracker instrument file | |
| .its | I mpulse T racker S ample | Impulse Tracker sample file | |
| .itz | I mpulse T racker z ipped | compressed tracker module ( music format ) from Impulse Tracker | |
| .iv | application / x-inventor | Open Inventor file | 3D computer graphics format. Similar to VRML . Two modes: ASCII and binary |
| .ivd | Microdata dimension or variable-level | Beyond 20/20 | |
| .ivp | User subset profile | Beyond 20/20 | |
| .ivt | Table or aggregate data | Beyond 20/20 | |
| .ivx | Microdata directory | Beyond 20/20 | |
| .iw | Presentation flowchart | IconAuthor-HSC Interactive | |
| .iw | Screensaver | Idlewild | |
| .iwa | Text file | IBM Writing Assistant | |
| .iwc | Install watch document | - | |
| .iwm | Start file | IconAuthor | |
| .iwp | Text document | Wang, used on Olivetti screen typewriters | |
| .izt | Binary token file | - |