QR Code & Barcodes · page 6
QR payload builders, barcode structure tools, label planning and scan-test utilities.
271 tools in this category
Shows how company prefix length controls the number of assignable GTINs.
Explains when a new GTIN must be assigned for product, pack, or price changes.
Computes mod-10 3-1-1 check digits for GTIN-8, 12, 13, 14, and SSCC-18 bodies.
Computes the final check digit for 12-digit EAN-13 bodies.
Computes 13-digit GLN check digits for location identification.
Computes mod-11 ISBN-10 check digits including the X value.
Computes the two C and K check characters for Code 93 data.
Computes one or two mod-11 check characters for Code 11 data.
Computes MSI Plessey check digits under mod 10, mod 11, and 1010 variants.
Computes the optional mod-43 check character for Code 39 symbols.
Computes and verifies Luhn mod-10 check digits for card and account numbers.
Computes the North American VIN check digit with transliteration weights.
Builds LPA:1$SMDP$ACTIVATION_CODE carrier strings for eSIM install codes.
Converts a CSV of network credentials into one WIFI: string per row for IT rollouts.
Validates 13-digit structure, prefix ranges, and check digits of EAN-13 codes.
Validates EAN-8 digit counts and check characters before label printing.
Validates UPC-A number system, manufacturer, product, and check structure.
Expands 8-digit UPC-E back to UPC-A and recompresses with zero-suppression parity rules.
Validates Code 39 character set, start and stop asterisks, and length limits.
Validates Code 128 start patterns, check character, and stop bar structure.