<p>Silver-doped cadmium sulfide (CdS) thin films were synthesized using the laser-assisted chemical bath deposition (LACBD) technique with Ag concentrations ranging from 1 to 5%. The main goal was to investigate the impact of carefully controlled silver (Ag) insertion on the structural, optical, and electrical properties of cadmium sulfide (CdS) films for optoelectronic applications, especially UV–visible photodetection. These changes were confirmed by material characterization through several techniques, which revealed substantial variations in the morphology, composition, and electronic properties of the materials with increasing silver content. The optical band gap was adjusted from 2.87 to 2.34 eV, and electrical tests indicated improved photodetection performance. At a doping level of 3% Ag, the performance of the films was exceptional. Several excellent parameters were measured at this concentration, such as responsivity of 1085.3 A/W, sensitivity of 5363.4%, gain of 54.63, and detectivity of 1.18 × 10¹² Jones. However, higher doping levels caused the creation of defects, which led to the reduction of device efficiency. These results point to 3% Ag-doped CdS thin films as new materials for UV–visible Photodetector with high sensitivity, and they also indicate the success of LACBD in modulating the optoelectronic properties of the thin film.</p>