Uses the JavaScript Object Notation (JSON) open data standard for storing geographical features as key-value pairs. ESRI Shapefile Consists of a group of files (.shp, .shx, .dbf etc) that need to be stored in the same directory or part of a zip file. The .shp file contains the feature geometry itself. KML Keyhole Markup Language is based on XML, using tag-based structure with nested elements and attributes to store geographic data. CSV/TSV with WKT Well Known Text (WKT) is a text markup language for representing vector geometry objects on a map.