.GCF File

The gcf file extension is associated with Steam Client by Valve, originally code named Grid, hence the Grid Cache File now more referenced as Game Cache File.

The gcf file contains data about installed games, that make it easier to migrate the Steam Client. Can be used for plenty of games sold by Valve.

A gcf file extension is related to Steam Client and used for Game Cache files.

How to open:

Use compatible tools to work with *.gcf files.

How to convert:

Cache files are usually not meant to be converted to anything else.