The GroupDocs Metadata API provides the feature To read basic metadata in CAD files. The supported CAD formats are:
DWG DXF Reading CAD metadata To access metadata in a CAD drawing, the GroupDocs.Metadata API provides the CadRootPackage.getCadPackage method.
The following code snippet reads metadata associated with a CAD file.
advanced_usage.managing_metadata_for_specific_formats.cad.CadReadNativeMetadataProperties
try (Metadata metadata = new Metadata(Constants.InputDxf)) { CadRootPackage root = metadata.getRootPackageGeneric(); System.out.println(root.getCadPackage().getAcadVersion()); System.out.println(root.getCadPackage().getAuthor()); System.out.println(root.getCadPackage().getComments()); System.out.println(root.getCadPackage().getCreatedDateTime()); System.out.println(root.getCadPackage().getHyperlinkBase()); System.out.println(root.getCadPackage().getKeywords()); System.out.println(root.getCadPackage().getLastSavedBy()); System.out.println(root.getCadPackage().getTitle()); // ....metadata of PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX, emails, images...