MapTiler Desktop supports merging multiple layers into one map. This article contains basic information about the process. Please note that merging of multiple layers is available only in MapTiler Desktop Pro.
With MapTiler Desktop, you can merge multiple images together and create one big map overlay. Or you can combine images on different zoom levels, which are going to change as the end-user is zooming up and down through the final map, or merge multiple MBTiles together.
Merge multiple images together to create a mosaic
You can also make a color correction to give all images a unified seamless look.
Map created from four aerial images
Combine images on different zoom levels
You can also combine images on different zoom levels, so the final product will be a map where different layers change as the end-user zooms in and out. The procedure is similar to the example above, but with multiple layers (which mostly consist of images taken by different devices at a different time) is even more important to make a color correction to give the map a unified seamless look.
Merge multiple MBTiles
MapTiler can also merge multiple MBTiles together. If you have an image you want to include in your map, process it first and render into MBTiles format and then merge with existing MBTiles file.