The Effect of Sharia Literacy, Online Reviews and Store Ratings on Purchases at Herbamart Mampangarief fitriyantoarief fitriyantoauthorStudy’saims:This study aims to find out the influence of Islamic literacy in the buying and selling process in online transactions, the influence of Online reviews, and the influence of Store ratings on the purchasing decision of consumers who are Muslims at HerbamartMampang. It is intended to explore the role of Sharia-based understanding and information about the market in the consumers' attitude to online purchasing decisions. Design/Methodology/Approach:This research is quantitative, used survey method. The data obtained was done by using online questionnaires distributed using the Google Forms to 221 consumers of Herbamart in Mampang who were selected by purposive sampling. Data analysis was carried out using SPSS 25.0 software which includes descriptive statistics, validity, reliability test, classical assumption test, multiple linear regression, coefficient of determination analysis, correlation analysis and hypothesis testing.Findings:The results indicate that the three variables of Islamic literacy in online transaction, online review and store rating are positively and significantly correlated with purchasing decisions. Islamic literacy builds consumer's confidence by fostering transparency, fairness, and adherence to Islamic principles. When it comes to selling products online, the reviews help to eliminate uncertainty and build trust by offering relevant dataabout the products and sellers. In the meantime, store ratings provide information about the credibility and quality of the stores dealing with the products, which in turn are designed to drive sales decisions. Theoretical contribution/Originality:This study adds value to the literature because it illustrates the synergistic effects of Islamic literacy and information from digital marketplaces on Muslim consumers' purchases. Practitioner/Policy implication:The results indicate that there is a need to enhance the transparency of transactions, foster positive reviews by customers and maintain high store ratings to foster consumers' trust and aid their decisions in purchasing.Keywords: Islamic Literacy; Online Transactions; Online Reviews; Store Ratings; Purchasing DecisionsZ665 Library Science. Information Science2026-06-06UMMArticle