Associated .LXF software

Windows
LXF file extension
LEGO Digital Designer Model File
The .LXF file format is used by LEGO Digital Designer (LDD), a virtual LEGO building application by the LEGO Group.
These files are saved using the .ZIP compression format and within each .LXF file, there are three files:
- MODEL100.MODEL
A binary LXF scene file
- IMAGE100.PNG
A thumbnail images of the model
- IMAGE100.LXFML
An XML formatted documents which describes the location of the bricks.