Hi, when running this test with ConTeXt ver: 2025.02.04 17:52 LMTX and checking the result in Adobe Reader > Document Properties > Tagged PDF : »No«! \setupbackend[ format={pdf/a-1b:2005}, profile={default_cmyk.icc,default_rgb.icc,default_gray.icc}, intent=Coated FOGRA39 (ISO 12647-2:2004), level=0] \setupstructure[state=start,method=auto] \setupbackend[export=yes] \starttext TEST \stoptext Can you confirm this? Steffen