ArcGIS Map Document
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What is an MXD file?
An MXD file is a map file format used by ESRI ArcGIS mapping software. It is saved in a compound format that includes the map description, layout elements, layers, and embedded objects saved in the map.
ESRI ArcGIS is a mapping application for the Windows platform that allows you to create, share, and manage geographic maps, data, and analytical models. When you save a map in ArcGIS, the software creates an MXD file to store the contents.
NOTE: MXD map files may grow in size after being saved multiple times because they can become fragmented. If you save a fragmented map document as a new document, it may reduce its file size.
How to open an MXD file
You can open MXD files with ESRI ArcGIS in Windows. For example, to open an MXD file, click Insert, then select Import Map in the Project group.
How to convert an MXD file
ESRI ArcGIS can convert MXD files to various file types, including the following formats: