# Map Themes
In Mergin Maps Input, you can use different map themes. This is ideal for switching between different background maps (e.g. cartography map and aerial photography). The map themes should be first set up in QGIS.
# Setting up QGIS map themes
Read how to 
set up a new map theme (opens new window) in QGIS.
- Open QGIS Desktop with your QGIS Project
- In the Layers Panel, click on "Manage Map Themes" (eye-icon)
- Add new themes or replace existing themes.
# Map themes in Mergin Maps Input
To access the Map Themes, select More > Map themes. The list of the Map Themes should appear as a pop up.
