Free Barcode Generator
How to Generate Your Barcode
- Code 128: Alphanumeric (GST, Customer ID, Order numbers)
- Code 39: Alphanumeric (Products, Employee IDs)
- EAN-13: Numeric only (Retail products)
- UPC: Numeric only (Retail products)
- QR Code: Any text, URLs, or JSON data
Tip: Use Code 128 for GST numbers and mixed alphanumeric codes.
- GST:
27AAACB1234E1Z5 - Customer ID:
CUST00123 - Product Code:
PROD-ABC-1234 - URL/Text (for QR Code):
https://www.goltc.in
Note: EAN-13 must have 13 digits and UPC must have 12 digits.
- Width: Thickness of each vertical bar (default: 2)
- Height: Height of the barcode bars (default: 80)
Tip: Standard values work well for printing on labels or invoices.
Select a colour for the bars. Default is black (#000000) for maximum readability.
Click Generate Barcode to preview instantly. QR Codes appear on a canvas; 1D barcodes appear as SVG.
- SVG: For 1D barcodes (Code 128, Code 39, EAN-13, UPC)
- PNG: For QR Codes
Use it for printing on invoices, labels, or digital documents.
- QR Codes: Scan with iPhone camera or any scanner app
- 1D Barcodes: Scan with barcode scanner apps (Android/iPhone)
Tip: Test before printing to ensure readability.
- Keep barcodes high contrast (dark bars on light background).
- Avoid bars that are too thin or too short.
- Use Code 128 for all alphanumeric and mixed data for maximum compatibility.
FAQ
Question 1: What types of barcodes can I generate?
Answer 1: You can generate Code 128, Code 39, EAN-13, UPC, and QR Codes. These cover GST numbers, product codes, customer IDs, order numbers, and URLs or text for QR Codes.
Question 2: Is this barcode generator free to use?
Answer 2: Yes! The tool is completely free and works entirely online. No downloads or subscriptions are required.
Question 3: Can I scan the generated barcode with my phone?
Answer 3: Yes. QR codes can be scanned directly using your iPhone or Android camera. Other barcode types like Code 128, Code 39, EAN-13, and UPC require any standard barcode scanner app.
Question 4: Can I print the barcode on labels or invoices?
Answer 4: Absolutely. You can download barcodes as SVG (for 1D barcodes) or PNG (for QR codes) and print them on labels, invoices, or any documents.
Question 5: What if my barcode doesn’t scan?
Answer 5: Ensure the barcode has sufficient size and contrast. Check that the correct barcode type was selected and that your scanner supports it. For 1D barcodes, increase width and height if needed.

