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Bacteria develop resistance against antimicrobial drugs, and new remediations are constantly being introduced in the market. Silver and its compounds have strong resistance against different bacteria. The vegetable waste extract-synthesized silver nanoparticles (VWE-AgNPs) have distinct properties and potential applications because of their unique size and morphology. The fundamental purpose of this study was to develop an environment-friendly method for the synthesis of VWE-AgNPs to avoid the use of hazardous chemicals that cause danger to the environment as well as recycling vegetable waste material. The VWE-AgNPs were synthesized by mixing 1 mM AgNO3 solution and VWE at room temperature. The VWE-AgNPs were characterized by UV-visible spectroscopy, FTIR, SEM, and EDX. The synthesized particles showed good antibacterial properties against poultry bacteria Salmonella gallinarum and Salmonella enteritidis (growth reduction of 31 mm and 18 mm at 80 mg/mL AgNPs, respectively). The results demonstrated that VWE-AgNPs inhibited the growth of tested bacterial strains. The fabricated VWE-AgNPs also had the potential to act as a green photocatalyst for degradation of 87.7% of methylene blue (MB) and 90.76% of methyl orange (MO) nearly at 3.25 h and 1 h sunlight exposure time, respectively. The highest antifungal activity, which was determined to be 36.5 mm and 31.8 mm against Alternata sp. and C. albican, was discovered to be in VWE-AgNPs.