Barcode Generator
Generate barcodes in multiple formats online: CODE128, EAN13, EAN8, UPC, CODE39, ITF14
Enter content to generate a barcode
What is a Barcode?
A barcode is an encoding method that represents data using bars of different widths. It is widely used in product identification, logistics tracking, inventory management, and more. Common formats include CODE128 (universal), EAN-13 (international product code), and UPC (North American product code). Scanning barcodes enables quick data retrieval and improves work efficiency. Note: Barcodes can only encode ASCII characters (letters, numbers, and some symbols). They do not support non-ASCII characters like Chinese, Japanese, or Korean. Use the QR Code tool to encode Unicode text.
How to Use
- Enter the content to encode (numbers or letters)
- Select the appropriate barcode format (different formats have different input requirements)
- Adjust bar width, height, color and other parameters
- Click the "Generate Barcode" button
- Download as PNG or SVG format
Common Uses
- Product identification: EAN-13 barcodes for global retail products
- Logistics tracking: ITF-14 barcodes for shipping packages
- Inventory management: CODE128 barcodes for warehouse management
- Manufacturing: CODE39 barcodes for industrial parts
- Library management: Barcodes for book lending systems
FAQ
What are the differences between barcode formats?
CODE128 supports all ASCII characters and is the most versatile. EAN-13 uses 13 digits for international products. UPC-A uses 12 digits for North American products. CODE39 supports digits and uppercase letters. ITF-14 uses 14 digits for logistics packaging.
What are the input requirements for EAN-13?
EAN-13 requires 12 or 13 digits. If you enter 12 digits, the system automatically calculates the check digit. If you enter 13 digits, the last digit must be the correct check digit.
Can the generated barcode be scanned?
Yes. The barcodes generated by this tool conform to international standards and can be recognized by all barcode scanners and mobile scanning apps.
What is the difference between PNG and SVG formats?
PNG is a bitmap format suitable for web and documents. SVG is a vector format that scales without quality loss, ideal for printing and large displays. SVG is recommended for print barcodes.
Is my data uploaded to any server?
No. All generation happens locally in your browser. Your data is never uploaded to any server, ensuring complete privacy.
Why can't I enter Chinese or other non-ASCII characters?
Barcodes are a one-dimensional encoding that can only represent the ASCII character set (English letters, numbers, and a few symbols). Non-ASCII characters like Chinese, Japanese, or Korean cannot be encoded in barcodes. To encode Unicode text, please use the QR Code tool, which supports full UTF-8 encoding.