The File Extensions Database

.AUX File Extension

  • Category: Settings Files
  • Format: Text

What is an .AUX file?

.AUX is LaTeX Auxiliary File

File created by TeX and LaTeX, which are typesetting standards often used to generate academic papers and other technical documentation; contains information about a document such as footnotes, bibliography entries, and cross-references.

AUX files are written when a .TEX file is typeset (formatted to an output document) by LaTeX. Since the generation of LaTeX documentation can take multiple passes before the document is complete (because of file and citation cross-referencing), the AUX file is used to store information between runs of the LaTeX compilation process.

Programs that open LaTeX Auxiliary File
LaTeX Editor
TeX Live
File Type 2 Auxiliary File
Category: GIS Files

Data file used by various geospatial applications such as ESRI ArcGIS Desktop and ERDAS IMAGINE; contains auxiliary geospatial data that accompanies the raster data in a corresponding file (such as a geographic .JPG file or a GeoTIFF .TIF file); used for storing data that cannot be stored in the raster image file.

AUX files enable GIS software applications to perform spatial analysis on raster data. They may store color maps, statistics, coordinate system information, transformation data, and projection data. They are sometimes provided with geographic images, but they may also be generated by the GIS program.

AUX files are usually stored in the same directory as their corresponding raster data files, and they typically use the same filename prefix. For example, rasterdata.tif would have an AUX file with the name rasterdata.aux.

Programs that open Auxiliary File
ESRI ArcGIS for Desktop

How to solve problems with AUX files

  • Associate the AUX file extension with the correct application. On :
    Windows: Right click on any AUX file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.AUX files". Mac: Right click (or Ctrl-click) the AUX file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .AUX is LaTeX Auxiliary File. Because only the current version supports the latest AUX file format. Search, therefore, e.g. on the N/A manufacturer website after an available .AUX is LaTeX Auxiliary File update.
  • To make sure that your AUX file is not corrupted or virus-infected, get the file again and scan it with antivirus software.