What powers usa4books.com?
Last seen Jun 2026 · 38 technologies across 15 categories
Advertising
Analytics
Google Analytics
since Jan 2023
Microsoft Clarity
since Jan 2023
CDN
cdnjs
since Jan 2023
Cloudflare
since Jan 2023
Ecommerce
Cart Functionality
since Jan 2023
Shopify
since Jan 2023
Font scripts
JavaScript libraries
Miscellaneous
HTTP/3
since Jan 2023
Open Graph
since Jan 2023
Payment processors
American Express
since Jan 2023
Apple Pay
since Jan 2023
Google Pay
since Jan 2023
Klarna Checkout
since Nov 2025
Mastercard
since Jan 2023
PayPal
since Jan 2023
Shop Pay
since Jan 2023
Visa
since Jan 2023
Performance
LazySizes
since Jan 2023
Priority Hints
since Mar 2023
Reviews
Trustpilot
since Apr 2023
Security
Cloudflare Bot Management
since Sep 2024
HSTS
since Jan 2023
Shopify apps
Booster Page Speed Optimizer
since Jan 2023
Tag managers
Google Tag Manager
since Jan 2023
UI frameworks
Video players
Magisto
since Jan 2023
Audience
- 84% phone
- 14% desktop
- 1% tablet
United States
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
0.39 / 10 · ranked #38,181,502 of all domains
2 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.7 s |
| INP | 75 ms |
| CLS | 0.4 |
| TTFB | 800 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 4.5 MB · 354 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
- detected Cloudflare Bot Management May 2026
- dropped Google AdSense Apr 2026
- dropped Cloudflare Bot Management Nov 2025
- detected Klarna Checkout Nov 2025
- detected lit-element Nov 2025
- detected lit-html Nov 2025
- detected Preact Oct 2025
- dropped Google Customer Reviews Aug 2025