Enter a value and read it as a scannable barcode, generated entirely in your browser. Code 128 covers full ASCII with the subset chosen automatically — unsupported characters are named in the error — while EAN-13 takes digits only: 12 digits gain the computed check digit, 13 have it verified with the correct digit stated on mismatch. Download as SVG or PNG, adjust bar width, height and the quiet zone — clamped to the spec minimums so scanners keep working — and toggle the value printed under the bars. The encoders are unit-tested against published encoding vectors, the same regime as the QR generator.
| Data acquired | None. |
|---|---|
| Libraries used | Lit 3 — bundled into the tool file itself. |
| Data stored | None. |
| Data transmitted | None. |