What powers handbookhub.com?
Last seen Aug 2026 · 18 technologies across 10 categories
Analytics
CDN
Issue trackers
JavaScript frameworks
JavaScript libraries
Miscellaneous
Programming languages
Security
UI frameworks
Webmail
AI Crawlers
Blocks 1 of 33 AI crawlers we track by name in its robots.txt. Checked Aug 2026.
Training crawlers
- GPTBot Blocked
The other 32 AI crawlers we track are not mentioned and only inherit the catch-all rules that apply to every crawler.
- robots.txt found
- llms.txt found
- ai.txt not found
Content Signals:
search=yes ai-train=no ai-input=yes declared in robots.txt
AI Crawlers
1 of 33 AI crawlers blocked
Standards: llms.txt, Content Signals
Audience
- 61% desktop
- 39% phone
United States
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
1.58 / 10 · ranked #5,860,590 of all domains
19 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 75 ms |
| CLS | 0 |
| TTFB | 1000 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 1.0 MB · 69 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Aug 2026.
Full technology history →
Report an incorrect detection
Recent changes
- detected UptimeRobot Jul 2026
- dropped Crisp Live Chat Jun 2026
- detected Cloudflare Bot Management May 2026
- dropped Google Font API May 2026
- dropped Google Sign-in May 2026
- detected Preact May 2026
- detected Radix UI Apr 2026
- detected Tailwind CSS Apr 2026