The invention relates to a portable textile treatment device comprising a heatable soleplate (4) intended to be in contact with a textile (TXT) for treating the textile. The heatable soleplate (4) comprises a soleplate opening (H). The device comprises a module (MD) comprising an image sensor (5) for taking an image of the textile to be treated through the soleplate opening (H), and a control unit (8) configured for a) executing an algorithm stored in said portable textile treatment device, using the taken image as an input of the algorithm, to obtain a classification of the textile, and for b) controlling, based on the classification, at least one operating parameter of the portable textile treatment device. The module (MD) and the control unit (8) are integrated within the portable textile treatment device. The image sensor comprises an active surface sensitive to light which is oriented with respect to the surface of the heatable soleplate (4), with an absolute value of an orientation angle being in the range from 15 to 70 degrees. The portable textile treatment device further comprises thermal insulation means arranged in-between the heatable soleplate (4) and the module (MD) for insulating the module (MD) from heat dissipated by the heatable soleplate (4).