XML-structured files developed by the Print Quality eXchange (PQX) Working Group for the transmission of performance data within the print supply chain, allowing brand owners to assess and track relevant production and quality data.

PQX files intend do facilitate the one-way transmission of performance data for one or more printed samples from a single press run between print service providers to relevant stakeholders and brand owners; thus allowing brand owners to assess and track relevant business, production, color and quality data of printed materials of all forms.

Color data is reported using the ISO-compliant CxF format and may include both spectral and non-spectral data.