What powers pdfbuddy.com?
Last seen Sep 2026 · 17 technologies across 12 categories
Advertising
Twitter Ads
since Jul 2021
Analytics
CDN
Cloudflare
since Mar 2025
Google Workspace
since Aug 2022
Sendgrid
since Aug 2022
JavaScript frameworks
JavaScript libraries
jQuery Migrate
since Jan 2019
Miscellaneous
Open Graph
since Sep 2022
Programming languages
Ruby
since Jun 2018
Security
Cloudflare Bot Management
since Mar 2025
HSTS
since Sep 2022
UI frameworks
Web frameworks
Ruby on Rails
since Jun 2018
Widgets
Twitter
since Jun 2017
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Oct 2026.
- robots.txt found
- llms.txt not checked
- ai.txt not checked
AI Crawlers
No AI crawlers blocked
Audience
- 84% desktop
- 16% phone
United States
India
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.25 / 10 · ranked #1,191,940 of all domains
55 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.9 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1300 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Weight: 0.9 MB · 49 requests
- Structured data: Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Infrastructure
- Hosted on Amazon Web Services (13.248.244.96)
- DNS: dnsimple-edge.com
- Email: Google Workspace
- Email security: SPF (hard fail), no DMARC record
- SSL: Let's Encrypt, RSA 2048, expires Jan 2027
- Common Crawl link graph: rank 1,890,447, 2 hosts
- Verified with: Google
DNS records as swept Oct 2026, certificate as seen Oct 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare May 2026
- detected Cloudflare Bot Management May 2026
- detected Bootstrap Mar 2026
- dropped Cloudflare Nov 2025
- dropped Cloudflare Bot Management Nov 2025