📊 Universal Barcode Generator 📊

EAN-13 (European Article Number 13)

• Length: 13 digits (12 data + 1 check digit)
• Structure: Country code (2-3 digits) + Manufacturer code (4-5 digits) + Product code (5 digits) + Check digit (1 digit)
• Usage: Most common format worldwide, used in retail globally
• Example: 5901234123457
• Check Digit: Calculated using modulo 10 algorithm

EAN-8 (European Article Number 8)

• Length: 8 digits (7 data + 1 check digit)
• Structure: Country code (2-3 digits) + Product code (4-5 digits) + Check digit (1 digit)
• Usage: Used for small products where EAN-13 doesn't fit
• Example: 12345670
• Check Digit: Same algorithm as EAN-13

UPC-A (Universal Product Code A)

• Length: 12 digits (11 data + 1 check digit)
• Structure: Number system digit (1) + Manufacturer code (5) + Product code (5) + Check digit (1)
• Usage: Standard in North America, equivalent to EAN-13 without leading zero
• Example: 012345678905
• Note: Adding a leading zero to UPC-A creates a valid EAN-13

UPC-E (Universal Product Code E)

• Length: 8 digits (7 data + 1 check digit)
• Structure: Compressed version of UPC-A for small products
• Usage: Used when space is limited (e.g., small packages, bottles)
• Example: 01234565
• Note: Can be expanded to full UPC-A format

Code 128 (Alphanumeric)

• Type: High-density linear barcode
• Characters: All 128 ASCII characters (letters, numbers, symbols)
• Variants: Code 128A (uppercase + control), Code 128B (alphanumeric), Code 128C (numeric pairs)
• Usage: Shipping labels, packaging, logistics, inventory management
• Example: HELLO123 or Hello World!
• Advantages: High density, full ASCII support, automatic check digit

Code 39 (Alphanumeric)

• Type: Alphanumeric barcode
• Characters: Uppercase A-Z, digits 0-9, and special chars: space, -.$/+%
• Usage: Automotive industry, defense, identification cards
• Example: CODE-39 or ABC123
• Note: Case-insensitive, limited character set

ITF-14 (Interleaved 2 of 5)

• Length: 14 digits (13 data + 1 check digit)
• Type: Numeric barcode with interleaved bars
• Usage: Shipping cartons, logistics, warehouse management
• Example: 1234567890123 → 12345678901234
• Check Digit: Calculated using modulo 10 algorithm
• Note: Used for outer packaging, not individual products

Codabar (Numeric + Special)

• Type: Self-checking numeric barcode
• Characters: Numbers 0-9, start/stop characters: A, B, C, D
• Usage: Libraries, blood banks, photo labs, shipping
• Example: A1234567890B or 1234567890
• Note: Start/stop characters (A-D) are optional but recommended

MSI (Modified Plessey)

• Type: Numeric barcode
• Characters: Digits 0-9 only
• Usage: Retail inventory, warehouse management
• Example: 123456
• Note: Variable length, check digit optional

Pharmacode (Pharmaceutical Binary Code)

• Type: Binary barcode for pharmaceuticals
• Range: Numeric value from 1 to 131,070
• Usage: Pharmaceutical packaging, drug identification
• Example: 12345 or 50000
• Note: Compact binary format, used on small packages

Sample Examples (with calculated check digits):

• EAN-13 Sample: 590123412345 → 5901234123457 (Poland country code 590)
• EAN-8 Sample: 1234567 → 12345670
• UPC-A Sample: 01234567890 → 012345678905
• UPC-E Sample: 0123456 → 01234565
• Code 128 Sample: HELLO123 (alphanumeric)
• Code 39 Sample: CODE-39 (alphanumeric with dash)
• ITF-14 Sample: 1234567890123 → 12345678901234
• Codabar Sample: A1234567890B (with start/stop chars)
• MSI Sample: 123456 (numeric)
• Pharmacode Sample: 12345 (numeric, 1-131070)

💡 Tip: Use the "Load Sample" buttons above to automatically populate and generate these example barcodes. The check digits are automatically calculated for you!