Alpha-3
- USD -> valid
data validator
Validate ISO currency codes (alpha-3 and numeric) client-side.
Supports common ISO 4217 alpha-3 codes and numeric pattern (000–999).
Case-insensitive input; outputs uppercase.
Runs entirely client-side/offline; no data leaves the page.
data
Country Code Validator
Validate ISO country codes (alpha-2 and alpha-3) client-side.
data
Postal/ZIP Code Validator
Validate postal/ZIP codes by country (US, CA, UK, DE, FR, AU, NL, ES, IT, BR, IN, SG, NZ, CH, JP) entirely in your browser.
security
Credit Card Validator
Run a local Luhn check to confirm card number format before hitting payment APIs—no data leaves your browser.
Format-only; does not verify settlement or payment availability.