Postal Code Validation API: A Practical Implementation Guide
Learn how to handle country-specific postal code formats in address forms, normalize user input, and use postal code lookup data.
October 3, 2026 3 min
Blog
Guides, explainers and references on addresses, postal codes and country data for developers.
Address Autocomplete API: Integrating Location Data in Forms
Learn how an address autocomplete API can help simplify form entry, and how administrative location data supports postal code lookup and validation.
October 2, 2026 3 min