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.
+
+# 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 Test" (or "Jalview Develop" 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 applicaiton name. The Applications folder link and Uninstall applications are positioned as these names are fixed.