The File Extensions Database

.JPW File Extension

  • Developer by: ESRI
  • Category: GIS Files
  • Format: Text

What is an .JPW file?

.JPW is World File for JPEG

JPEG world file used by geographic information system (GIS) applications; stores the location, scale, and rotation of a map that is saved as a JPEG image; used for associating raster map images with world locations, such as for aerial satellite photographs.

JPW files are saved in a plain text format. They contain a series of lines that define the X and Y pixel size, rotational/shear coefficients, and the X and Y world coordinates that correspond to the center of top-left image pixel.

NOTE: JPW files do not contain actual image data. They are typically saved as a separate data file alongside a .JPG file.

Programs that open World File for JPEG
ESRI ArcReader
ESRI ArcGIS for Desktop
Blue Marble Geographics Global Mapper
ESRI ArcReader

How to solve problems with JPW files

  • Associate the JPW file extension with the correct application. On :
    Windows: Right click on any JPW file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.JPW files". Mac: Right click (or Ctrl-click) the JPW 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 .JPW is World File for JPEG. Because only the current version supports the latest JPW file format. Search, therefore, e.g. on the ESRI manufacturer website after an available .JPW is World File for JPEG update.
  • To make sure that your JPW file is not corrupted or virus-infected, get the file again and scan it with antivirus software.