What powers postcodes.io?
Last seen Jun 2026 · 9 technologies across 7 categories
CDN
Cloudflare
since Dec 2020
jQuery CDN
since Sep 2023
Documentation
JavaScript frameworks
React
since May 2025
JavaScript libraries
Miscellaneous
Open Graph
since Sep 2023
Webpack
since May 2025
UI frameworks
Webmail
Google Workspace
since Sep 2023
Audience
- 83% desktop
- 17% phone
United Kingdom
India
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
4.70 / 10 · ranked #310,690 of all domains
68 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 5.1 MB · 18 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| api.postcodes.io | 9 |
| postcodes.io | 6 |
Full technology history →
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Recent changes
- dropped Prism Aug 2025