A Barcode Generator is a tool used to create barcodes, which are machine-readable representations of data used in tracking and identification. Barcodes can encode information such as product numbers, serial numbers, and other data necessary for inventory management and sales processes. Barcode generators allow users to input the required information and generate barcodes in various formats, such as UPC, EAN, and Code 128, which can then be printed and used on products and packaging.