Having problems opening an IDX file?

We have programs that can open or convert your IDX files.

Opening IDX files

Did your computer fail to open an IDX file? We explain what IDX files are and recommend software that we know can open or convert your IDX files.

What is an IDX file?

Files that contain the .idx file extension are created by a number of DVD playback applications. These files contain information about the subtitles of a DVD, including the subtitle text and start points for when the subtitles should be shown. The IDX file does not contain any actual video data. The video data is contained in an associated video file that is linked to the appropriate IDX file.

The .idx extension is also given to index files. These files contain indexes to database files in order to help speed up the data requests that are sent to a computer database. Some applications that use .idx file extension for index files include Corel WordPerfect, Microsoft Outlook and Quicken.

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About File Extension IDX

File.org aims to be the go-to resource for file type- and related software information. We spend countless hours researching various file formats and software that can open, convert, create or otherwise work with those files.

If you have additional information about the IDX file format or software that uses files with the IDX suffix, please do get in touch - we would love hearing from you.