Validate Tools

Browse all available validate tools.

Available tools

EAN-13 Validator Validate the length, decimal syntax, and GS1 modulus-10 check digit of an EAN-13 symbol value without querying allocation records.
EAN-8 Validator Validate the length, decimal syntax, and GS1 modulus-10 check digit of an EAN-8 symbol value without querying allocation records.
GTIN Check Digit Validator Validate a complete GTIN-8, GTIN-12, GTIN-13, or GTIN-14, or compute the check digit from its data digits. An explicit mode avoids treating a 12- or 13-digit value as the wrong GTIN variant.
GTIN Validator Identify and validate GTIN-8, GTIN-12, GTIN-13, and GTIN-14 values by length, decimal syntax, and the common GS1 modulus-10 check digit.
IP Address Validator Validate, normalize, and classify an IPv4 or IPv6 address, including private, loopback, link-local, documentation, multicast, and globally routable ranges.
ISBN Validator Validate ISBN-10 and Bookland-prefixed ISBN-13 identifiers after removing spaces and hyphens, reject the 979-0 ISMN range, and convert valid 978-prefixed identifiers between formats.
ISMN Validator Validate current 13-digit 979-0 ISMNs and legacy M-prefixed ten-character ISMNs by their format and shared modulus-10 check digit.
ISSN Validator Validate an ISSN by normalizing spaces and its optional hyphen, checking seven data digits, and verifying the modulus-11 check character.
JAN Validator Validate a 13-digit JAN value by its Japan GS1 prefix and GS1 modulus-10 check digit without checking product assignment.
Luhn Checksum Validator Validate a sequence of digits against the Luhn checksum used by cards and account numbers.
Sudoku Grid Validator Check that a 9×9 Sudoku grid uses digits 0–9 and has no repeated nonzero value in any row, column, or 3×3 box. Zero represents an empty cell.
UPC-A Validator Validate the length, decimal syntax, and GS1 modulus-10 check digit of a UPC-A symbol value without querying allocation records.
UPC-E Validator Validate an eight-digit number-system 0 or 1 UPC-E by expanding its zero-suppressed fields and verifying the equivalent UPC-A check digit.
UUID Validator Check whether text uses the canonical UUID hexadecimal and hyphen layout, then report its version nibble.
VIN Check Digit Validator Validate the ISO 3779/North American VIN check character in position 9, or compute it from a 16-character VIN with that position omitted. The tool rejects forbidden letters instead of silently deleting them.

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