All tools · page 236
6,901 free tools across 25 categories. Tools marked with a lightning bolt are ready to use right now.
Provides a searchable table of common GS1 application identifiers with formats and lengths.
Validates AI order, lengths, and decimal notations in composed GS1 strings.
Formats AI 11 and AI 17 dates into YYMMDD production and expiry element strings.
Explains implied decimal positions in AI 310x-369x measure fields.
Builds 18-digit SSCC codes with extension digit, company prefix, and check digit.
Plans GS1 pallet label zones for SSCC, from-address, and carrier fields.
Plans multi-AI GS1-128 symbol layouts, widths, and FNC1 placement.
Composes GS1 Digital Link URIs embedding GTIN, lot, and serial in web URLs.
Explains the retail transition to 2D carriers and what data QR codes must carry.
Chooses between GS1-128, DataMatrix, and QR carriers for a given set of AIs.
Explains GTIN, GLN, GRAI, GIAI, and GSRIN identity types and their numbering rules.
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.