Add georeferenced image overlays on map (PNG/GeoTIFF)

Working with static maps, scanned plans, or satellite images can be frustrating. They might show the right features, but without proper alignment to real-world coordinates, they’re hard to use for analysis or planning.

The best part? Even without advanced GIS software or coding skills, you can turn a static map, satellite image, or floor plan into a spatially accurate layer. Once anchored to real-world coordinates, your visuals become ready to explore, analyze, and use for informed decision-making.



 


From Static Images to Spatial Layers

 

Georeferenced overlays transform ordinary images into map-ready layers, and GIS is what makes this transformation possible. By anchoring a PNG or Geo-TIFF to real-world coordinates, the image is no longer just a visual reference, it becomes usable geographic data. Once integrated, overlays allow planners, disaster managers, and researchers to analyze, compare, and make better decisions with confidence.


How the Overlay Process Works


Although adding overlays might sound technical, it’s actually a straightforward, step-by-step process. First, you upload your image, and then you select the location on the basemap where it should appear. Next, you align it with familiar landmarks, such as roads, rivers, or buildings. Additionally, tools for opacity, scaling, and rotation make fine-tuning much easier. While PNGs usually require manual adjustment, Geo-TIFFs often include built-in coordinates that automatically place them in the right position.


 

Easy overlay tools for everyone

You don’t need to be a GIS expert. Platforms like MAPOG make it easy to upload, align, and share PNG or Geo-TIFF overlays. Drop your static images onto a real-world basemap and instantly reveal patterns and compare layers. Whether it’s campus layouts, flood zones, or environmental changes, these overlays turn static files into interactive maps that inform decisions and tell engaging stories.

Have you tried using overlays or interactive maps in your projects? Share your experience in the comments and help others see what GIS can really do.



Location: Tezpur, Assam, India

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