What powers pdfbutler.com?
Last seen Sep 2026 · 48 technologies across 25 categories
Analytics
CDN
CMS
Cookie compliance
CRM
Databases
Documentation
Font scripts
JavaScript frameworks
JavaScript libraries
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Rich text editors
Security
Tag managers
UI frameworks
Video players
Web servers
Webmail
WordPress plugins
WordPress themes
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Sep 2026.
- robots.txt found
- llms.txt found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 54% phone
- 47% desktop
United States
Canada
Japan
New Zealand
Australia
Belgium
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.86 / 10 · ranked #1,849,572 of all domains
38 referring domains · OpenPageRank
Core Web Vitals
| LCP | 4.3 s |
| INP | 100 ms |
| CLS | 0 |
| TTFB | 900 ms |
Real user p75, Chrome UX Report, Sep 2026.
Page
- Language: English (United Kingdom)
- CDN: Cloudflare
- Weight: 2.3 MB · 145 requests
- WordPress theme: astra (child: astra-child) · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Oct 2026.
Organisation
- PDF Butler
From the homepage's own structured data (Oct 2026).
Infrastructure
- DNS: Amazon Route 53
- Email: no MX record returned, SPF names Microsoft 365
- Email security: SPF (hard fail), DMARC monitor only
- SSL: Let's Encrypt, ECDSA P256, expires Nov 2026
- Common Crawl link graph: rank 128,277, 8 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| pdfbutler.com | 36 |
| eu1.pdfbutler.com | 24 |
| www.pdfbutler.com | 23 |
Full technology history →
Report an incorrect detection
Recent changes
- detected BetterDocs Aug 2026
- detected BetterDocs plugin Aug 2026
- detected jQuery Migrate Aug 2026
- detected jQuery UI Aug 2026
- detected Polylang Aug 2026
- detected Twitter Emoji (Twemoji) Aug 2026
- detected Underscore.js Aug 2026
- detected Cloudflare Bot Management Jul 2026
- detected HTTP/3 Jul 2026