File Extension IDX

.IDX File

File extension: IDX
File type: Index
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Notes about the IDX file extension:



Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.

The IDX file type is primarily associated with 'Index'. The IDX extension is used by a wide variety of programs to indicate an index. This is usually an index into a database file. An index is useful in helping speed data requests from database files.

Detailed information for file extension IDX:


Primary association: Index

Other applications associated with file type IDX:

  • AOL (Temporary Internet Mail File)
  • ArcView (Geocoding Index For Read-Only Datasets) by ESRI Related links: GIS Info
  • Ca Visual Objects Platform for Developer (CAVO) (Index File) by CACA is the new name for Computer Associates. Visual Objects simplifies the integration of Windows and browser clients, web servers, middleware and back-end database systems. The .APP file usually has an associated .IDX index file and perhaps a .$DX backup index file. A *.CDP may also be present.
  • Clip Gallery 1.x (Index) by Microsoft Corporation
  • Complete Works (Index File) by Toplevel ComputingThe Complete Works product appears to no longer be offered or supported.
  • Corel QuickFinder Information
  • FAX File
  • FoxPro (Index) by Microsoft Corporation
  • ICQ (Index) by ICQ Inc.
  • Java (Applet Cache Index) by Sun Microsystems, Inc.With applet caching enabled, performance is improved because once an applet is cached it no longer needs to be downloaded when referenced again. Trough the Java Plug-In control panel it's possibile to manage the cache's settings or clear it. The identifying characters used for this association are - Hex: 10 00Related links: Java Plug-in Control Panel
  • LaTeX Index
  • NoXRelated links: Dragon UnPACKer
  • Outlook Express (Mailbox Index) by Microsoft Corporation
  • Pro/ENGINEER (Index File) by PTCPro/ENGINEER is a 3D product design product, featuring productivity tools that promote best practices in design while ensuring compliance with your industry and company standards.
  • RCA/Lyra Handheld MP3 Player (Database Index) by RCAFour of those files are generated along with a DAT file when you index the MP3s on a Lyra MP3 player. If you have a Lyra that takes a SD card, those same files are generated on the card as well for the MP3 files contained on it. The player uses those files to help you find songs by Album, Artist, Genre, and Title. These four categories have the file extension IDX and are less then one KB in size. The fifth file generated is named LYRAPDB.DAT, and is a text file containing information such as band names and song titles, along with what seems to be file name shorthand often used by programs for file management. The DAT file seems to be based on the number of MP3s on the flash ROM inside the Lyra itself or on the installed SD card, but is still smaller then 100 KB for a 256 MB SD card full of normal sized (3-5 MB) MP3s. All those files are stored in a folder named LYRA_SYS on the flash ROM of the MP3's they index. The information for those files comes directly form the ID tags of the MP3s. This association is classified as Database.
  • Stork Format Header InformationCMYK image.
  • Symantec Q&A (Relational Database Index File) by Symantec Corporation
  • VSFilter (Index File)VSFilter is a DirectShow filter that is able to rip subtitles from VOB files into a separate format. It can also render several different subtitle formats onto video, either during playback or encoding. It is part of the guliverkli project, and was previously named VobSub. The .IDX file is usually paired with a .SUB file. The identifying characters used for this association are - Hex: 23 20 56 6F 62 53 75 62 20 69 6E 64 65 78 20 66 69 6C 65 2C 20 76 , ASCII: #.VobSub.index.file,.vRelated links: Official guliverkli Project Homepage, Official Guliverkli2 Project Homepage

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File Identifier - TrID
'Identifying characters' used on FILExt.com are
provided by Marco Pontello from his TrID database




Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.

Technical data

To view technical data on file-extension IDX click this link to expand/hide the additional area.

System Info for File Extension .IDX

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly from user systems.

ProgramID: PcaCallerFile, FileType: pcAnywhere Caller Index File

ProgramID: QFIndexFile, FileType: QuickFinder Information File

ProgramID: VobSubFile
EXEFile: notepad.exe %1

ProgramID: ALShow.IDX
EXEFile: %ProgramFiles%\ESTsoft\ALShow\ALShow.exe

ProgramID: WinEdt.idx
EXEFile: %ProgramFiles%\WinEdt Team\WinEdt\WinEdt.exe %1

Program Name and MIME Type Info for File Extension .IDX

FILExt has been given permission to display a Program Name/MIME type database collected by Anthony R. Nemmer. Some of this data has already been included into the main FILExt database. Those entries which have not yet been incorporated are displayed below.
Program Name Mime Type application/filemaker

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