Map Extent Helper v1.1.0  |  NGMDB

The Map Extent Helper from the National Geologic Map Database Project lets users sketch a variety of geometry types to return the object extent in a variety of formats. The utility was originally developed for the librarian and archivist community to assist in capturing coordinate extents (particularly MARC formats) for use in metadata input. The utility was later extended to serve a larger community with additional output formats like GeoJSON, KML, CSV, and ISO/FGDC metadata. If you would like to suggest support for other formats, submit a request for more output formats.