Is it permissible to place a diploma certificate on the wall or a table?

Displaying one's certificate is permissible if it is for informing people of one's specialization for the purpose of benefiting them, or as a way of acknowledging Allah's blessings. It may also benefit business owners in gaining the trust of their clients. However, if it is done out of ostentation, pride, or if it leads to something forbidden, then it is not permissible. The matter should be assessed without excess or neglect, while also considering common practice.