The microservice 'extraction' can read XMP, EXIF data, etc. from media, office files, and e-mails and map the extracted data to uniform OS tags. A specific configuration defines mapping lists, how the extracted EXIF/XMP metadata should be provided unified in yuuvis® RAD. It maps different metadata to a common OS tag. For example, there is the OS tag "OS:LastModifiedBy" which is mapped with the extracted metadata "LastModifiedBy" (FlashPix), "LastModifiedBy" (XML) and "ModifiedBy" (Microsoft) so that in yuuvis® RAD all values can be provided to the users in the same index data field.

For reading metadata for media and office files, the open-source software ExifTool is used. This program can read, write and manipulate audio, video, and image metadata. A description of the tool can be found at the URL http://www.sno.phy.queensu.ca/~phil/exiftool/. Metadata tags supported by ExifTool can be found at http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/index.html .