By default, when preparing an input 3D file by converting into the CDXWEB and CDXBIMWEB formats, CAD Exchanger stores all information available in the original file. Moreover, it will generate polygonal representation (used for display in a 3D view) in the case if the original file does not contain one.

CAD Exchanger allows to specify which data needs to be stored in CDXWEB and thereby allows to increase speed of conversion, reduce storage space and memory footprint of the loaded model.

The following table specifies parameters from CAD Exchanger SDK which can be used to control the conversion to CDXWEB format. For more information please refer to the Base_WriterParameters.

Name	Values	Default value	Description
`WriteBRepRepresentation`	`true` or `false`	`true`	Indicates whether to save BRep representation or not.
`WritePolyRepresentation`	`true` or `false`	`true`	Indicates whether to save Poly representations or not.
`PreferredLOD`	`fine`, `medium`, `coarse` or `any`	`medium`	Indicates granularity level used as filter for Poly representations export. When `any` value specified, all available lods will be saved.
`WriteTextures`	`true` or `false`	`false`	Indicates whether to save textures or not.
`WritePMI`	`true` or `false`	`false`	Indicates whether to save PMI data or not.