Generate a sequence of up to 1000 valid EAN / ISBN / ISSN / ISMN codes from a given base pattern. 13 digits (EAN-13, GS1) format for books, magazines, music, and other items.
Enter EAN base pattern
9 digits: generate a block of 1000 valid EAN codes
10 digits: generate a block of 100 valid EAN codes
11 digits: generate a block of 10 valid EAN codes
12 digits: generate 1 valid EAN code (that is, generate missing checksum digit) with barcode