This category contains articles on barcodes, that all use the Barcode4 applet to demonstrate the encoding. The main article about barcodes is general is the Barcode article. See also list of all articles
This applet is currently a base of all barcode articles. Use combo box to select any available barcode in that the applet will encode your input. If the input cannot be represented by selected barcode, the applet shows red crossing lines.