Royal Mail PAF address finder for websites

Postcode Finder Software for Websites & Web Apps

Add fast, accurate UK address lookup to your website, signup form, checkout page or web application using Royal Mail PAF address data.

✓ Add to a page in minutes ✓ 30-day free trial ✓ Mobile friendly ✓ UK technical support
Try SimplyCompleteAI Request a Quote

Address lookup demo

10 Downing... Search
10 Downing Street
London
SW1A 2AA
1 line
HTML option
Royal Mail
data
API
secure
 
 

Choose the best website postcode finder option

We offer simple and flexible postcode finder options for websites, ecommerce checkouts, signup forms and modern web applications.

Simply Complete AI

Best for: Quick integration

Recommended option. Add search-as-you-type address lookup to almost any website with a simple HTML line and quick field mapping.

  • Search as you type, by postcode/part address
  • Simple HTML setup
  • Use wizard to map fields
  • Add one line of code
  • No server technology required
  • Very good mobile experience
  • Returns Full address information
  • Returns geo-location information
Get Started →
Open API

Best for: Web app devs.

Add search-as-you-type address lookup to almost any website using Open API calls.

  • Search as you type, by postcode/part address
  • Open API call
  • Full address search
  • Returns JSON Full address
  • Returns JSON geo-location information
  • Good for checkout/signup pages
  • Returns location information
View Open API Examples →
{ JSON }

Traditional postcode lookup

Traditional postcode lookup where the user enters a postcode, clicks Find, then selects the correct address from the results.

  • Search by Postcode only
  • Modern web app integration
  • Flexible UI control
  • Good mobile capability
View JSON Examples →
Built for business websites

Improve address capture on checkout, signup and customer forms

Help users complete forms faster, reduce failed deliveries, improve customer records and avoid address-entry mistakes.

Request a Quote Open a 30-Day Trial
Checkout Forms Signup Pages Customer Portals Web CRM Booking Forms Web Apps Mobile Forms Developer APIs

Website postcode finder features

Everything needed to add accurate UK address lookup to your website without maintaining your own address database.

PAF

Daily Royal Mail data

Royal Mail PAF address data is maintained and updated for you.

⚡

Quick integration

Choose simple HTML, AJAX examples, or modern framework options.

📱

Mobile friendly

Designed for modern forms, mobile users and fast address selection.

🔒

Secure API keys

Restrict API keys to your own website domain for better protection.

🎯

Geolocation returned

Return address data with location information where required.

UK

Free UK support

Get help from a UK software company with long experience in business systems.

🏢

Additional Datasets

Not Yet Built - house not built or not occupied yet
Multi-Residency - flats in a large property, such as a tower block

🚕

Taxi Locations

Airports, Bus and Train Stations. Seach by "STN" for stanstead airport.

✔

Over 99.99% availability

Multiple server locations ensure high availability.

Ready to add postcode lookup to your website?

Try Simply Postcode free, request a quote, or view the SimplyCompleteAI demo and instructions.

Try SimplyCompleteAI Open a 30-Day Trial Request a Quote

Prefer to talk? Call us on 01945 464854