There are disclosed embodiments of a decurler system for tag webs used for example in printers and stackers to automatically remove curl from tag webs to promote further tag handling and better tag appearance. The decurler system may determine the current diameter of a stock roll and gradually adjust parameters such as resistance and back bend so as to compensate for increased set in tag webs as the diameter of the stock roll decreases. In an embodiment, the decurler system may include different sets of parameters for different stock roll diameters depending on the material used for the tag webs.