Skip to main content
U.S. flag

An official website of the United States government

What are Cloud Optimized GeoTIFFs (COGs)?

A Cloud Optimized GeoTIFF (COG) is a GeoTIFF file with an internal organization that enables more efficient workflows in the cloud environment.  It does this by leveraging the ability of clients issuing ​HTTP GET range requests to ask for just the parts of a file they need.

Learn more: