Here is a breakdown of the three most common scenarios where you will encounter an IDX file.
Contains the actual graphical images of the subtitle text. what is idx file extension
: Right-click the file and select "Open With" -> Notepad (Windows) or TextEdit (Mac). Here is a breakdown of the three most
When you see an IDX file in a movie folder, it is almost always paired with a . Together, they are known as the VobSub format : # VobSub Index File )
If you see readable text or headers (e.g., # VobSub Index File ), you can identify the source program [2].
If it’s in a program’s "Data" folder, it is likely a meant to be read only by that specific software [2, 4].