OnBarcode Barcode Generator is a professional barcode generating software which helps to create and print barcodes in various formats (linear, 2D, GS1, etc) for various applications. It supports various barcode types, such as EAN-13, UPC-A, Code 39, Code 128, PDF417, Data Matrix, QR Code, etc. With this software, users can easily generate, customize, and print barcodes with just a few clicks. It also allows users to edit and customize existing barcodes. It has a user-friendly interface and supports various output formats, including JPG, PNG, TIFF, EPS, PDF, and SVG. It is a great tool for individuals and businesses who need to generate barcodes for labeling and tracking products.
Discontinued is not compatible with newer versions of Firefox, etc.: https://addons.mozilla.org/en-US/firefox/addon/OfflineQR/