Barcode Generator turns product codes and SKUs into scannable linear barcodes without installing label software.
Enter the data string, choose CODE128, EAN-13, UPC, or CODE39, then generate an SVG preview with the human-readable value under the bars. Matching digit length and character set to the symbology is what makes scanners succeed on the first try.
Retail packs, shelf tags, and warehouse bins need consistent symbology. The form stays small so you can test a few SKUs before a full print run.
What Barcode Generator does
Builds a linear barcode image from the text or digits you type and the format you select.
- Supports CODE128 for mixed alphanumeric SKUs
- Supports EAN-13 and UPC for retail product numbers
- Supports CODE39 for older warehouse scanners
- Draws an SVG preview with the encoded value displayed
- Surfaces an error when the data breaks format rules
- Leaves generation on your device so SKUs never hit a remote API
Who Barcode Generator is for
- Retail operators printing shelf and bin labels
- Warehouse staff encoding internal SKUs for handheld scanners
- Small ecommerce sellers preparing packaging barcodes
- Ops teams checking EAN or UPC length before a print run
How to use Barcode Generator
1. Open Barcode Generator on beeforge.dev.
2. Type the product code or SKU into the Data field (example: ABC-123).
3. Choose Format: CODE128, EAN-13, UPC, or CODE39.
4. Click Generate and check the SVG preview.
5. If an error appears, fix length or characters for that symbology, then generate again.
6. Capture the SVG from the preview for your label layout.
Features
- Four common symbologies in one select control
- Immediate SVG render after Generate
- Display value under the bars for visual QA
- Hint text for EAN-13 digit expectations
- Error alert for invalid data instead of a blank preview
- No signup and no desktop barcode suite required
Examples
- Encode SKU WH-88421 as CODE128 for a tote label.
- Paste a 13-digit GTIN into EAN-13; if rejected, recount digits and check the check digit.
- Use CODE39 when a legacy scanner rejects CODE128 on the floor.
Tips and limits
- EAN-13 and UPC enforce digit length; CODE128 is more flexible with alphanumeric data.
- Prefer black bars on white for cheap scanners, and keep quiet zones intact when scaling.
- Test one physical scan before a large print run; this tool does not register GTINs.
Related tools
- QR Code Generator for URL, Wi-Fi, and vCard codes that scanners read as 2D symbols instead of linear bars.
FAQ
Is Barcode Generator free?
Yes. You can generate barcodes on this page without creating an account or paying a license fee.
Does my barcode data leave the browser?
No. Encoding runs with client-side JavaScript and JsBarcode. The SKU string stays in your tab.
Can I use it on a phone?
Yes. Type carefully on small keyboards, especially for long EAN strings, then generate and inspect the SVG.
Why does Generate show an error?
The data usually fails format rules: wrong length for EAN/UPC, or characters CODE39 cannot encode. Adjust the string or switch format.
Can I link Barcode Generator from our wiki?
Yes. Link to /tools/barcode/ so teammates open the same stable path.