FILExt - The File Extension Source

Details for file extension .IDX are on this page. Because there is no central registry for file extensions and their associated programs there may be multiple entries on this page. And, because there are many (some say over a million) such associations not all may be listed here.

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Windows can't open .IDX files?
If Windows is unable to open files with the extension .IDX you may not have the appropriate program installed or, you may have registry errors. To help, we strongly recommend you run this free registry scan.

A search on the file extension you submitted shows 19 record(s). The details for each of these are shown below. The best FILExt can do for you is provide the details we know about. Selecting the information that applies to your particular situation is up to you. Use any hints provided. If the information here is not helpful, FILExt is sorry; but as a research site FILExt cannot provide personal support. If you need further information you might try the research tips on the FILExt Help Me page.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Index
Specific Notes [What's This?]
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. Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
Various programs use this extension; too many to list individually. Take clues from the location of the file as a possible pointer to exactly which program is producing the file. The file's date and time can also help if you know which programs you were running when the file was written.
This is record 5750 last modified on 2008-01-02 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
AOL Temporary Internet Mail File
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
Note: This entry has not yet been verified by FILExt. It was submitted to the list and appeared to be accurate; however, no verification links have so far been found on the Internet. Please use this association data with that in mind.
This is record 5757 last modified on 2007-04-17 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
ArcView Geocoding Index For Read-Only Datasets		ESRI
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		GIS Info
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 5744 last modified on 2004-06-23 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Ca Visual Objects Platform for Developer (CAVO) Index File		CA
Specific Notes [What's This?]
CA 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. Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 19223 last modified on 2006-01-13 and created on 2006-01-13.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Clip Gallery 1.x Index		Microsoft Corporation
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
Note: This entry has not yet been verified by FILExt. It was submitted to the list and appeared to be accurate; however, no verification links have so far been found on the Internet. Please use this association data with that in mind.
This is record 5745 last modified on 2003-01-14 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Complete Works Index File		Toplevel Computing
Specific Notes [What's This?]
The Complete Works product appears to no longer be offered or supported. Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 14534 last modified on 2003-05-25 and created on 2003-05-25.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Corel QuickFinder Information
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
Note: This entry has not yet been verified by FILExt. It was submitted to the list and appeared to be accurate; however, no verification links have so far been found on the Internet. Please use this association data with that in mind.
This is record 5746 last modified on 2003-01-14 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
FAX File
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
Note: This entry has not yet been verified by FILExt. It was submitted to the list and appeared to be accurate; however, no verification links have so far been found on the Internet. Please use this association data with that in mind.
This is record 5747 last modified on 2003-01-14 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
FoxPro Index		Microsoft Corporation
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
Note: This entry has not yet been verified by FILExt. It was submitted to the list and appeared to be accurate; however, no verification links have so far been found on the Internet. Please use this association data with that in mind.
This is record 5748 last modified on 2003-01-14 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
ICQ Index		ICQ Inc.
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 5749 last modified on 2003-04-28 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Java Applet Cache Index		Sun Microsystems, Inc.
Specific Notes [What's This?]
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. Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		Java Plug-in Control Panel
Identifying Characters [What's This?]
Hex: 10 00
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 18569 last modified on 2005-09-11 and created on 2005-09-11.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
LaTeX Index
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
Note: This entry has not yet been verified by FILExt. It was submitted to the list and appeared to be accurate; however, no verification links have so far been found on the Internet. Please use this association data with that in mind.
This is record 5753 last modified on 2003-01-14 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
NoX
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		Dragon UnPACKer
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 14664 last modified on 2007-07-21 and created on 2003-06-08.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Outlook Express Mailbox Index		Microsoft Corporation
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 5754 last modified on 2003-10-09 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Pro/ENGINEER Index File		PTC
Specific Notes [What's This?]
Pro/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. Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 5751 last modified on 2007-05-05 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
RCA/Lyra Handheld MP3 Player Database Index		RCA
Specific Notes [What's This?]
Four 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. Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
	Database	None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 20257 last modified on 2006-09-15 and created on 2006-09-15.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Stork Format Header Information
Specific Notes [What's This?]
CMYK image. Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
Note: This entry has not yet been verified by FILExt. It was submitted to the list and appeared to be accurate; however, no verification links have so far been found on the Internet. Please use this association data with that in mind.
This is record 5755 last modified on 2003-01-14 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
Symantec Q&A Relational Database Index File		Symantec Corporation
Specific Notes [What's This?]
(None) Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		None
Identifying Characters [What's This?]
(None or Unknown)
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 5756 last modified on 2007-01-04 and created on 2003-01-14.

Extension: IDX
Program and/or Extension Function [What's This?]		Company [What's This?]
VSFilter Index File
Specific Notes [What's This?]
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. Recommended: Find IDX errors now.
MIME Type [What's This?]	File Classification [What's This?]	Associated Links [What's This?]
		Official guliverkli Project Homepage Official Guliverkli2 Project Homepage
Identifying Characters [What's This?]
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,.v
Program ID [What's This?]
(None or Unknown)
General Notes [What's This?]
(None)
This is record 24558 last modified on 2008-01-02 and created on 2008-01-02.

System Info for File Extension .IDX

FILExt has been given permission to display the file extension database produced by the Associate This! program. Some of that data has already been included into the main FILExt database; but, not all. Those entries which have not yet been incorporated are shown below in the hope that they will be of some use. Data collected by FILExt on registered file extensions from user systems is also in the display. Be aware this is raw data which may require further research on your part to fully understand. In particular, look at the Program ID. Often a company will put the program's name into the short ID that Windows uses to open registered file extensions. If that's not the case, look at the complete path to the EXE file. Often, programs will install themselves into directories that give either the program or company name. The program name itself may also be used as the EXE file name. These listings are particularly important since they represent listings that are in actual use by users who have sumbitted data to FILExt and therefore these listings can point you to the most likely candidate should there be multiple entries in the FILExt main database.

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 that data has already been included into the main FILExt database; but, not all. Those entries which have not yet been incorporated are shown below in the hope that they will be of some use. Be aware this is raw data which may require further research on your part to fully understand. MIME type listings often contain the name of a program or, at a minimum, a type of file as the leading text in the MIME type.

General Info

• If the extension you are looking for is of the form .??_ the file is likely a compressed file and part of an install routine. When the install program runs it will expand the file and replace the underscore with the proper letter for the file type.
• If the file is sent as an audio file with any three-character extension it may be a dictation file where the extension is the dictator's initials; playable by BCB Voice Systems software (see ??? extension). The file could likewise be a dictation file in TrueSpeech format. Use Windows Sound Recorder and/or Media Player to play these back.
• If the extension you are looking for has a number at the end or is only a number and there were no results consider entering the same extension format using zero or one as some programs produce numbered split files but when the split can be extensive (e.g., .000-.999) only the first entry is in the database.

Need more information about any entries on this page? Try a Google search using terms in the above information along with words like "format," "convert," "conversion," and even "hacking." A search box is provided here for your convenience.

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