Valid IMEI
- 490154203237518 -> valid (checksum passes)
data validator
Validate IMEI numbers with Luhn checksum client-side.
Accepts 15-digit IMEI numbers (digits only).
Runs the Luhn checksum to confirm validity.
Runs entirely client-side/offline; nothing is uploaded.
data
GTIN/UPC/EAN Validator
Validate GTIN-8, GTIN-12 (UPC), GTIN-13 (EAN), and GTIN-14 with checksum math locally.
security
Credit Card Validator
Run a local Luhn check to confirm card number format before hitting payment APIs—no data leaves your browser.
data
Routing Number Validator
Validate US routing numbers (ABA) with checksum math locally to catch typos before payouts.
Format/checksum only; does not verify device ownership or activation status.