The workhorse barcode: any letters, digits and punctuation, in the densest linear symbol there is. Inventory systems, asset tags, serial numbers, shipping. The subset is chosen automatically for the shortest symbol.
Free · no signup · no limits
SVG, PNG at 600 dpi, PDF, label sheets
2 · Content · Code 128
Any ASCII text, up to 48 characters for comfort.
3 · Size and print
At 300 dpi each bar is 4 printer dots = 0.339 mm. The PNG uses exactly that.
4 · Download
SVG and PDF are vectors at the exact millimetre size shown. The PNG uses a whole number of printer dots per bar so nothing blurs. Generated in your browser; nothing is uploaded.
Code 128 unless an old system requires Code 39. It is denser, encodes more characters, and has a built-in check character.
It depends on the text. The generator shows the width in millimetres for your bar width. GS1 limits it to 165 mm; long values are better as Data Matrix.
Yes. Use Bulk: paste or upload a list, or generate a serial range, and download a ZIP or a label sheet PDF.
Other barcodes