Content Folder Twins detects double files in the content folders of DAZ Studio and Poser. It either compares files by the file name or relative path, by their content, or both. The content comparison may optionally consider that content files may be compressed, that text files may differ only in whitespaces (spaces, tabs, line ends, carriage returns), that images may be stored in different file formats, and that binary morphs may contain the same morphs in a different order.

There are many reasons why the same files may exist several times in Poser and DAZ Studio content folders. A product may have been installed twice, either accidentally or because there is a Poser and a DS version, which share most of the resource files. Geometries are sometimes used in several props, each with own geometry and binary morph file, even if the geometry and the morphs are the same. Texture resources are sometimes used in several products, each time with own file name and folder location. For all these cases, Content Folder Twins will detect double files. Some of these files may be deleted to save disk space.

Poser is known to confuse files that have the same name. Content Folder Twins may search for files with the same name that may cause this kind of problems.

The content comparison is highly optimized to keep time for searches in acceptable limits even for content folders with a very high number of files and large file sizes.