![https://www.gs1.org/1/gtinrules/en https://www.gs1.org/1/gtinrules/en](https://innovation.world/wp-content/uploads/2024/02/www.gs1_.org1gtinrulesen-1000px.jpeg)
A comprehensive site to explain all rules, how and when, to define a new set of GTIN or EAN code, required for any new or heavily modified product.
A useful set of pages, from the GS1 international association.
English and many languages
Free, No registration, No Download/Install required