Frequently Asked Questions

Why must I close the drawing currently open in AutoCAD before I can compare it to another drawing?

While calculating the Temporary Drawings, CompareDWG performs several operations on the input drawings. To make sure that none of these operations affect the original drawings, it loads the original drawings in separate drawing databases, which are discarded without saving when the comparison completes.
This requires that the original drawings are not opened in AutoCAD.

I compared two files, but no output is shown?

Either your input files were empty or no differences were found.

Does CompareDWG support DXF files?

Not directly, you should load them into AutoCAD and save them as DWG files, then use CompareDWG. Please be aware of precision issues.

If I change the definition of a block / linetype / layer