UPC Database is a global database of barcodes. The database includes UPC, EAN, and the Bookland system. The site was created to provide users access to the barcode meta data. The site also offers a digital check calculator, a QR Code generator, and a mobile site. The UCP Database API REST calls and allows users to get information from the site in JSON or XML. Users can also use cURL to add barcode information to the database. An account is required with service.