Barcode Generator
Generate professional barcodes in multiple formats
Customization
Higher scale produces clearer images, ideal for printing
Batch Configuration
Variables: {SEQ}=number | {SEQNUM}=padded, {RANDOM}=random (affected by digit count)
Barcode will appear here
About Barcodes
What is a Barcode?
A barcode is a method of representing data in a visual, machine-readable form. It consists of parallel lines of varying widths and spacings that can be read by optical scanners. Barcodes are widely used in retail, logistics, healthcare, and many other industries.
How to Use This Tool
Basic Steps
- Enter the data to encode in the input field
- Select the appropriate barcode format (e.g., Code 128, EAN-13)
- Adjust customization settings (width, height, colors, etc.)
- Click 'Generate Barcode' button to preview
- Download as PNG or SVG, or copy to clipboard
Batch Generation Feature
Enable batch mode to generate multiple barcodes at once. Use template variables to auto-generate sequences:
-
{SEQ}Sequence number (e.g., 1, 2, 3...) -
{SEQNUM}Zero-padded sequence (e.g., 0001, 0002..., digits controlled by setting) -
{RANDOM}Random number (digits controlled by setting)
PNG
Raster format, suitable for web display and general printing
SVG
Vector format, infinitely scalable, ideal for high-quality printing
Barcode Types Explained
Code 128
A high-density linear barcode symbology capable of encoding all 128 ASCII characters. Widely used in shipping and logistics, forming the basis of the GS1-128 standard. Supports three character sets (A/B/C) with automatic switching for optimal encoding.
Code 39
A variable-length discrete barcode symbology that can encode uppercase letters, digits, and some special characters. Widely adopted in non-retail environments due to its simplicity and self-checking capability.
EAN-13
European Article Number (EAN-13) is the most widely used retail barcode standard globally. Consists of 13 digits with the last digit being a check digit. Enter 12 digits and the check digit will be calculated automatically.
EAN-8
EAN-8 is a compact version of EAN-13, designed for small product packaging. Consists of 8 digits with the last digit being a check digit.
UPC-A
Universal Product Code (UPC-A) is the standard barcode for retail in the United States and Canada. Consists of 12 digits with the last digit being a check digit.
ITF-14
Interleaved 2 of 5 (ITF-14) is used for carton and pallet identification. The 14-digit code includes a check digit as the last digit and can be printed directly on corrugated cardboard.
MSI (Modified Plessey)
MSI (Modified Plessey) barcode is primarily used for warehouse shelf labeling and inventory management. Supports various check digit algorithms.
Pharmacode
Pharmacode is designed specifically for the pharmaceutical industry, used in automated production lines for drug packaging. Can only encode integers between 3 and 131070.
Codabar
Codabar is an older barcode format primarily used in libraries, blood banks, and courier package tracking. Requires A, B, C, or D as start/stop characters.
Use Cases
Best Practices
- Ensure adequate contrast (dark bars on light background)
- Maintain appropriate barcode size for scanner compatibility
- Keep sufficient quiet zone (white space) around the barcode
- Always test barcode readability before printing
- Choose a barcode format compatible with your application
FAQ
Why did my EAN-13 barcode generation fail?
EAN-13 requires 12 digits (the check digit is calculated automatically). Make sure your input contains only numbers, no letters or special characters. If you enter 13 digits, the system will verify if the check digit is correct.
What's the difference between PNG and SVG formats?
PNG is a raster format with smaller file size, suitable for web display and general printing. SVG is a vector format that can be scaled without loss, ideal for high-quality professional printing.
How can I ensure my barcode scans correctly?
Ensure adequate contrast (black bars on white background is best), maintain appropriate size (width should be at least 3cm), leave sufficient quiet zone (white space) around the barcode, and test scanning before printing.
How do I set up batch generation templates?
Use template variables to generate sequences. For example: PROD-{SEQNUM} will generate PROD-0001, PROD-0002, etc. You can set the start number, increment step, and number of digits to control the sequence format.
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