File Extension Library

.IDX File Extension

  • Category: Misc Files

What are .IDX files and how to open them?

Can't open .IDX file? Are you wondering what it contains? On our site we will explain to you what this file is, what it is used for and what software opens the .IDX file.

What is a .IDX file extension?

.IDX file extension has been classified as Misc Files.

.IDX is Movie Subtitle File

An IDX file is a data file used by various DVD playback programs to display subtitles. It contains the subtitle text as well as cue points for when each subtitle should be shown during the movie timeline. IDX files are saved with a corresponding video file, such as an .AVI or .MKV file.

IDX files are similar to .SUB files, which are also used to store subtitles for videos. An IDX file is typically accompanied by a SUB file and the video file. They will also all bear the same filename.

List of all softwares that can open the Movie Subtitle File
CyberLink PowerDVD 17
VideoLAN VLC media player
URUWorks Subtitle Workshop
VideoLAN VLC media player
VideoLAN VLC media player
J2 Interactive MX Player
File Type 2:

Navigation POI File

Developer by: VDO Dayton Category: Data Files

Contains points of interest (POI) for a VDO Dayton GPS portable navigation device (PND); includes a header and a set of POIs; each POI consists of a 3 byte index, then 8 bytes for the coordinates and 46 bytes for name and type.

IDX files can be transferred to VDO Dayton PNDs via USB.

File Type 3:

Index File

Category: System Files

Stores an index of files used by various programs; used by search functions to speed up searches; once a hard disk, directory of files, or database is indexed, the data can be searched and sorted more efficiently.

Used by Microsoft FoxPro, Corel QuickFinder, ESRI ArcView, ICQ, and other programs.

List of all softwares that can open the Index File
ESRI ArcGIS for Desktop
File Type 4:

HMI Historical Log Index File

Category: Data Files

Index for log files created by InTouch Human-Machine Interface (HMI) software or ReportBuilder with ODBC Connector pack for InTouch; used for running reports from collected data

File Type 5:

Outlook Express Mailbox Index File

Category: Text Files

Stores an index of mail messages stored in an Outlook Express mailbox (.MBX file); should be located in the same folder as the mailbox files; required for importing old Outlook Express mailboxes into Outlook Express 5 or later.

List of all softwares that can open the Outlook Express Mailbox Index File
Microsoft Outlook Express

How to fix problems with .IDX files

  1. You need to update the application that you normally use to open .IDX files. Only the latest version of the software supports the current .IDX file format
  2. You need to check the .IDX file for viruses. To do this, you need to scan it with a popular antivirus (Norton, Nod32, Kaspersky, Dr.Web, etc.)