validation.isbn
Check an ISBN-10 or ISBN-13 and convert between them; the normalised form is always the ISBN-13.
validate_isbn in RustTagged ean
3 capabilities
validation.gs1-check-digit
Compute or check the GS1 mod-10 check digit of any GS1 key: GTIN, SSCC, GLN, GSRN, GDTI, GSIN and the rest.
A group of 2:
gs1_check_digit, is_gs1_check_digit_valid
validation.gtin
Check an EAN-8, UPC-A, EAN-13 or GTIN-14 barcode number against the GS1 mod-10 check digit.
validate_gtin in Rust