An .IDX file is generally an used by various software applications to speed up data retrieval. It does not store the main data itself, but rather pointers or references to where data is located within a larger data file (e.g., .DAT , .BIN , .CFG , or proprietary formats).
| Software / Context | Purpose of .IDX | |-------------------|----------------| | | Index file for .SUB subtitles (VobSub format) — contains timecodes and positions. | | Databases | Index for faster searching (e.g., dBase, FoxPro, Paradox). | | Email servers | Index of email storage (e.g., Microsoft Exchange .edb + .idx , or older Outlook Express). | | CD/DVD ripping | Index of tracks or chapters (e.g., CloneCD .ccd + .img + .sub ). | | E-book readers | Index for dictionary or document lookup. | | Multimedia | Index for video chapters (e.g., some PVR/DVR recordings). | | Backup software | Index of archived files (e.g., Norton Ghost ). | | GPS devices | Index of map data. | | Game data | Index for quick asset access (e.g., some RPG maker or custom engines). | idx file type
This is common in environments using tools like Creo Parametric or Zuken. 4. General Database and Search Indexes | | Databases | Index for faster searching (e
# Read Data size = np.prod(shape) data = np.frombuffer(f.read(size * data_dtype().itemsize), dtype=data_dtype) | | E-book readers | Index for dictionary or document lookup