Fruit by-products (FBPs) are a significant source of bioactive compounds, including phenolic acids, carotenoids, flavonoids, and dietary fibers, which have potential health benefits. However, these by-products often contain contaminants such as pesticides, mycotoxins, heavy metals, and anti-nutritional compounds that pose safety concerns. The utilization of FBPs in food, pharmaceutical, and cosmetic industries requires careful processing to ensure safety and quality. Techniques such as drying, size reduction, and densification are essential to prepare FBPs for further processing. Advanced extraction methods like supercritical fluid extraction, ultrasound-assisted extraction, and microwave-assisted extraction are being explored to efficiently recover bioactive compounds while minimizing environmental impact. Biotransformation processes using enzymes or microorganisms can convert FBPs into valuable products such as antioxidants, enzymes, and biofuels. Despite these advancements, challenges remain in ensuring the safety and efficacy of FBPs, including the presence of harmful contaminants and the need for standardized processing methods. This review highlights the potential of FBPs in developing healthy and functional foods, while emphasizing the importance of safety assessments and sustainable practices in their utilization.Fruit by-products (FBPs) are a significant source of bioactive compounds, including phenolic acids, carotenoids, flavonoids, and dietary fibers, which have potential health benefits. However, these by-products often contain contaminants such as pesticides, mycotoxins, heavy metals, and anti-nutritional compounds that pose safety concerns. The utilization of FBPs in food, pharmaceutical, and cosmetic industries requires careful processing to ensure safety and quality. Techniques such as drying, size reduction, and densification are essential to prepare FBPs for further processing. Advanced extraction methods like supercritical fluid extraction, ultrasound-assisted extraction, and microwave-assisted extraction are being explored to efficiently recover bioactive compounds while minimizing environmental impact. Biotransformation processes using enzymes or microorganisms can convert FBPs into valuable products such as antioxidants, enzymes, and biofuels. Despite these advancements, challenges remain in ensuring the safety and efficacy of FBPs, including the presence of harmful contaminants and the need for standardized processing methods. This review highlights the potential of FBPs in developing healthy and functional foods, while emphasizing the importance of safety assessments and sustainable practices in their utilization.