What powers 
whatismyviewport.com?
Last seen Sep 2026 · 8 technologies across 5 categories
Analytics
Cloudflare Browser Insights
since Nov 2025
Google Analytics
since Feb 2020
Caching
Varnish
since Feb 2020
CDN
Cloudflare
since Feb 2020
Fastly
since Feb 2020
Miscellaneous
PaaS
GitHub Pages
since Feb 2020
AI Crawlers
Doesn't mention any of the 33 AI crawlers we track in its robots.txt; all are allowed by default. Checked Sep 2026.
- robots.txt found
- llms.txt not found
- ai.txt not found
AI Crawlers
No AI crawlers blocked
Audience
- 64% desktop
- 31% phone
- 5% tablet
India
Germany
Russia
Brazil
United Kingdom
France
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
3.45 / 10 · ranked #942,890 of all domains
32 referring domains · OpenPageRank
Core Web Vitals
| LCP | 0.7 s |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare, Fastly
- Weight: 0.3 MB · 27 requests
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.21.1.245, IPv6)
- DNS: Cloudflare DNS
- Email: no MX record returned
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Dec 2026
- Common Crawl link graph: rank 7,007,365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Full technology history →
Report an incorrect detection
Recent changes
- detected Cloudflare Browser Insights Nov 2025