Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 142.251.39.209 |
| Server Software | Google Frontend |
| 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 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 142.251.39.209
Server Software Google Frontend
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 X-Frame-Options The site can be embedded in iframes by third parties (clickjacking risk).
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://golang.org:443 | 301 | HTTP/2 301 |
| 2 | https://go.dev/ | 200 | HTTP/2 200 |
#1 URL https://golang.org:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://go.dev/
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 1.7 ms |
| TCP Connect | 6.7 ms |
| TLS Handshake | 8.9 ms |
| Time To First Byte (TTFB) | 153.5 ms |
| Content Download | 2.6 ms |
| Total Response Time | 156.1 ms |
DNS Lookup 1.7 ms
TCP Connect 6.7 ms
TLS Handshake 8.9 ms
Time To First Byte (TTFB) 153.5 ms
Content Download 2.6 ms
Total Response Time 156.1 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000; includeSubDomains; preload |
| CSP | ✔ Configured |
| X-Frame-Options | ⚠ Not configured |
| X-Content-Type-Options | ⚠ Not configured |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000; includeSubDomains; preload
CSP ✔ Configured
X-Frame-Options ⚠ Not configured
X-Content-Type-Options ⚠ Not configured
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | The Go Programming Language |
| Meta Description | Go is an open source programming language that makes it simple to build secure, scalable systems. |
| Canonical | https://go.dev/ |
| Open Graph Title | The Go Programming Language |
| Open Graph Description | Go is an open source programming language that makes it simple to build secure, scalable systems. |
| Open Graph Image | https://go.dev/doc/gopher/gopher5logo.jpg |
| Twitter Card | summary |
| Twitter Image | https://go.dev/doc/gopher/gopherbelly300.jpg |
Title The Go Programming Language Meta Description Go is an open source programming language that makes it simple to build secure, scalable systems. Canonical https://go.dev/ Open Graph Title The Go Programming Language Open Graph Description Go is an open source programming language that makes it simple to build secure, scalable systems. Open Graph Image https://go.dev/doc/gopher/gopher5logo.jpg Twitter Card summary Twitter Image https://go.dev/doc/gopher/gopherbelly300.jpg Detected Technologies
| Technology | jQuery Google Analytics Google Tag Manager Cloudflare Node.js |
Technology jQuery Google Analytics Google Tag Manager Cloudflare Node.js
HTTP Headers
| Content-type
| text/html; charset=utf-8 |
| Vary
| Accept-Encoding |
| Content-security-policy
| connect-src 'self' www.google-analytics.com stats.g.doubleclick.net ; default-src 'self' ; font-src 'self' fonts.googleapis.com fonts.gstatic.com data: ; frame-ancestors 'self' ; frame-src 'self' www.google.com feedback.googleusercontent.com www.googletagmanager.com scone-pa.clients6.google.com www.youtube.com player.vimeo.com ; img-src 'self' www.google.com www.google-analytics.com ssl.gstatic.com www.gstatic.com gstatic.com data: * ; object-src 'none' ; script-src 'self' 'sha256-n6OdwTrm52KqKm6aHYgD0TFUdMgww4a0GQlIAVrMzck=' 'sha256-4ryYrf7Y5daLOBv0CpYtyBIcJPZkRD2eBPdfqsN3r1M=' 'sha256-sVKX08+SqOmnWhiySYk3xC7RDUgKyAkmbXV2GWts4fo=' www.google.com apis.google.com www.gstatic.com gstatic.com support.google.com www.googletagmanager.com www.google-analytics.com ssl.google-analytics.com tagmanager.google.com ; style-src 'self' 'unsafe-inline' fonts.googleapis.com feedback.googleusercontent.com www.gstatic.com gstatic.com tagmanager.google.com ; |
| Strict-transport-security
| max-age=31536000; includeSubDomains; preload |
| Content-encoding
| gzip |
| X-cloud-trace-context
| 11a1bc7e854c5f7cba71e504c4c534e5 |
| Date
| Thu, 20 Aug 2026 09:45:21 GMT |
| Server
| Google Frontend |
| Content-length
| 12085 |
Meta Tags
| Viewport | width=device-width, initial-scale=1 |
| Theme-color | #00add8 |
| Description | Go is an open source programming language that makes it simple to build secure, scalable systems. |
Content-type text/html; charset=utf-8
Vary Accept-Encoding
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Strict-transport-security max-age=31536000; includeSubDomains; preload
Content-encoding gzip
X-cloud-trace-context 11a1bc7e854c5f7cba71e504c4c534e5
Date Thu, 20 Aug 2026 09:45:21 GMT
Server Google Frontend
Content-length 12085
