-Georeferencing is the process of assigning geographic coordinates to a scanned map or raster image. Many historians are now [georeferencing](https://perma.cc/5CLB-HNXN) historical maps to study how places have changed over time. After georeferencing a historic map, you may want to display it online to share your research or tell a story. In this lesson, we will show you how to share a georeferenced map online using StoryMap JS, an interactive web-based mapping platform. [StoryMap JS](https://perma.cc/6PNW-KTM3) is an open-source tool from Knight Lab at Northwestern University, which allows you to integrate historical and contemporary maps into interactive stories. If you haven’t yet created a georeferenced map, the *Programming Historian* lessons on [Georeferencing in QGIS 2.0](/lessons/georeferencing-qgis) and [Introduction to Map Warper](/es/lecciones/introduccion-map-warper) offer detailed tutorials.
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