Barcode generator. Generate a barcode as an SVG image: Code 128 for any printable ASCII text (switching to the compact numeric set for runs of digits, with the mod-103 check symbol), or EAN-13 for 12 or 13 digits (the check digit is computed or verified). Set bar width and height and whether to print the text below. Returns the SVG and a data URL ready for an <img> tag. Use for shipping labels, product codes, tickets or inventory; for QR codes use qr.

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