How to generate and export a barcode locally
Enter text or digits, choose a barcode type and generate a black-on-white barcode in your browser. Export a scalable SVG or a PNG. EAN-13 and UPC-A accept a complete code or compute the final check digit when it is omitted.
How do you do it?
- Choose the barcode type and enter text, or select Sample for a suitable value.
- Select Run and check the encoded text and barcode preview; keep leading zeroes in product codes.
- Download SVG or PNG. Preserve the white quiet zones and test a printed sample with the intended scanner.
Complete an EAN-13 check digit
The final 7 is computed from the first 12 digits. Supplying a complete 13-digit code with a wrong check digit produces an error instead of silently changing it.
Input:
Type: EAN-13
Digits: 590123412345
Output:
Encoded digits: 5901234123457
SVG and PNG barcodeWhen is this workflow useful?
Use this tool for one-dimensional labels and test fixtures. Use QR Code Generator for Unicode text and URLs. For production product labels, confirm identifier assignment, required symbol dimensions and scanning quality separately.
What should you check before relying on the result?
Maximum 128 characters. Code 128 accepts printable ASCII only; Code 39 accepts uppercase letters, digits, spaces and - . $ / + %. EAN/UPC are digits only. A correct check digit does not prove a product identifier has been assigned or registered. This tool does not certify GS1 compliance, scanner compatibility or print quality. SVG uses vector paths; PNG is a raster export at the generated size.
What can go wrong?
| Problem | What to try |
|---|---|
| The product code is rejected. | The digit count or supplied check digit does not match EAN-13 or UPC-A. Use 12/13 digits for EAN-13 or 11/12 for UPC-A. Keep leading zeroes and remove separators. |
| Text is rejected or a printed barcode does not scan. | Each symbology has a limited character set, and scanning depends on size, contrast and margins. Use uppercase for Code 39 and printable ASCII for Code 128. Keep the margins and avoid stretching or low-resolution printing. |
Frequently asked questions
Do I need to upload data or sign in?
No. Processing runs in the current browser. This site serves the page and required static engine assets.
Why does the result disappear after I edit the input?
The tool clears stale output so a previous result cannot be mistaken for the new one. Run again after changing input or settings.
References
First edition: steps checked against the current tool interface, with examples and known limits.