Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 192.12.12.13 |
| Server Software | nginx/1.10.3 |
| Compression | gzip |
|
🔒 🟡 Mixed Content (1 HTTP resources) | The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers. |
|
ℹ 🔵 Missing HSTS | HTTP Strict Transport Security is not configured. Recommended for HTTPS sites. |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
|
ℹ 🔵 Missing X-Frame-Options | The site can be embedded in iframes by third parties (clickjacking risk). |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 192.12.12.13
Server Software nginx/1.10.3
Compression gzip
🔒 🟡 Mixed Content (1 HTTP resources) The page is served over HTTPS but loads 1 resource(s) over HTTP. This may be blocked in modern browsers.
ℹ 🔵 Missing HSTS HTTP Strict Transport Security is not configured. Recommended for HTTPS sites.
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
ℹ 🔵 Missing X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Performance
| DNS Lookup | 17.7 ms |
| TCP Connect | 140.7 ms |
| TLS Handshake | 250 ms |
| Time To First Byte (TTFB) | 842.4 ms |
| Content Download | 124.1 ms |
| Total Response Time | 966.5 ms |
DNS Lookup 17.7 ms
TCP Connect 140.7 ms
TLS Handshake 250 ms
Time To First Byte (TTFB) 842.4 ms
Content Download 124.1 ms
Total Response Time 966.5 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✘ Not configured |
| CSP | ⚠ Not configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✘ Not configured
CSP ⚠ Not configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
Detected Technologies
| Technology | Google Analytics Nginx Node.js |
Technology Google Analytics Nginx Node.js
HTTP Headers
| Server
| nginx/1.10.3 |
| Date
| Sun, 23 Aug 2026 19:07:23 GMT |
| Content-Type
| text/html; charset=utf-8 |
| Transfer-Encoding
| chunked |
| Connection
| keep-alive |
| X-Powered-By
| Express |
| Cache-Control
| public, max-age=3600 |
| Vary
| Accept-Encoding |
| Content-Encoding
| gzip |
Meta Tags
| Viewport | width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no |
| Facebook-domain-verification | 67rkbs177dx0bk8vquhh20lfnrgyva |
| X-UA-Compatible | IE=edge |
| Description | Welcome to Santa Fe Institute. |
| Google-site-verification | RmumqlnTzjVON1e71pQx9z0mBXQ_psDsewUdvGULQac |
Server nginx/1.10.3
Date Sun, 23 Aug 2026 19:07:23 GMT
Content-Type text/html; charset=utf-8
Transfer-Encoding chunked
Connection keep-alive
X-Powered-By Express
Cache-Control public, max-age=3600
Vary Accept-Encoding
Content-Encoding gzip
