What powers penny-black.co.uk?
Last seen Jun 2026 · 42 technologies across 20 categories
Advertising
Microsoft Advertising
since Jun 2021
Analytics
Google Analytics
since Apr 2019
CDN
Cloudflare
since Feb 2021
Google Hosted Libraries
since Feb 2022
Ecommerce
Cart Functionality
since Feb 2021
Shopify
since Feb 2021
Mailgun
since Aug 2022
Issue trackers
JavaScript frameworks
React
since Oct 2021
JavaScript libraries
Live chat
Loyalty & rewards
Smile
since Aug 2021
Marketing automation
Omnisend
since Feb 2021
Miscellaneous
Payment processors
American Express
since Feb 2021
Apple Pay
since Feb 2021
Google Pay
since Feb 2021
Klarna Checkout
since Oct 2024
Mastercard
since Nov 2021
PayPal
since Nov 2021
Shop Pay
since Feb 2021
Visa
since Feb 2021
Performance
Priority Hints
since Feb 2023
Personalisation
Bold Commerce
since Dec 2025
Reviews
Reviews.io
since Aug 2022
Security
Cloudflare Bot Management
since Jan 2024
HSTS
since Sep 2022
Shopify apps
Video players
Plyr
since Jan 2022
Webmail
Apple iCloud Mail
since May 2025
Microsoft 365
since Aug 2022
Audience
- 59% phone
- 37% desktop
- 5% tablet
United Kingdom
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
1.29 / 10 · ranked #8,733,176 of all domains
5 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.6 s |
| INP | 75 ms |
| CLS | 0.05 |
| TTFB | 400 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 3.9 MB · 399 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Full technology history →
Report an incorrect detection
Recent changes
- dropped Glide.js Jun 2026
- dropped Swiper Apr 2026
- detected Bold Commerce Dec 2025
- detected Bold Upsell Dec 2025
- detected Glide.js Nov 2025
- detected Swiper Oct 2025
- dropped reCAPTCHA Aug 2025