convert -units PixelsPerInch jalview_dmg_background_blur.png -density 72 jalview_dmg_background_blur_72dpi.png
```
The final image should be saved as `jalview_dmg_background.png` (which the above `convert` command will do) as this is the filename set in the `install4j8_template.install4j` file to include in the final DMG.
+
+# Alternative backgrounds
+
+There are now specific background images with associated DS_Stores for Release, Develop and Test. Anything else should use the non-release DS_Store and background image.
+
+## Non-release background `jalview_dmg_background-NON-RELEASE.png`
+This is created in much the same way with `jalview_dmg_background-NON-RELEASE.svg` and is used as a more generic background for non-release versions where the "Jalview Build" (or "Jalview Local" etc) application icon is placed in the first available slot in the Finder window. We cannot position these unless we create a DS_Store specifically for each possible application name. The Applications folder link can be (and is) positioned as this names is fixed.