PEFtrust is an innovative app designed to help brands in the clothing and footwear industry measure and communicate their products' environmental footprints. By utilizing minimal data, it offers a simple, transparent, and consistent method to evaluate and compare environmental impacts, assisting brands in substantiating their ecological claims. The app generates product labels that align with environmental transparency regulations, providing standardized labeling directly on product description pages through a customizable Shopify e-commerce plugin. With its comprehensive PEF scoring algorithm, developed by lifecycle assessment experts, PEFtrust consolidates 16 environmental impacts into one score. It facilitates the collection and centralization of necessary product information, supporting the implementation of product evaluation and ESG Scope 3 strategies. Available 24/7, PEFtrust empowers brands to launch and update their sustainability projects seamlessly, fostering an ongoing commitment to environmental accountability.