A CDML file is a backup diagram created by Creately, an online and desktop tool used to create diagrams such as flow charts, mind maps, and SWOT analyses. It contains a diagram, which includes text, arrows, and a variety of shapes (circles, squares, triangles, stars, balloons, people, etc.).

CDML files are created using the "Export" feature in the toolbar of the program. By exporting your diagram to a CDML file and saving it on your computer you are able to store a local backup of your work. You can also export diagrams to .PDF, .JPG, and .PNG files. To import a CDML file, simply select "Import" from the toolbar. Creately also enables you to share your diagram with others. You can send a link to other collaborators with editing or viewing permissions and publish it to a web page, Facebook, Twitter, or LinkedIn.