Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 172.66.152.40 |
| Server Software | cloudflare |
| CDN | Cloudflare |
| Compression | gzip |
|
ℹ 🔵 Missing Content Security Policy | CSP is not configured. It helps prevent XSS attacks and content injection. |
HTTP Status Code 200
HTTP Version HTTP/1.1
HTTPS ✔ Available
IP Address 172.66.152.40
Server Software cloudflare
CDN Cloudflare
Compression gzip
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
Performance
| DNS Lookup | 9.4 ms |
| TCP Connect | 12.9 ms |
| TLS Handshake | 11 ms |
| Time To First Byte (TTFB) | 381.1 ms |
| Content Download | 0.5 ms |
| Total Response Time | 381.6 ms |
DNS Lookup 9.4 ms
TCP Connect 12.9 ms
TLS Handshake 11 ms
Time To First Byte (TTFB) 381.1 ms
Content Download 0.5 ms
Total Response Time 381.6 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31536000; includeSubDomains; preload |
| CSP | ⚠ Not configured |
| X-Frame-Options | ✔ SAMEORIGIN |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31536000; includeSubDomains; preload
CSP ⚠ Not configured
X-Frame-Options ✔ SAMEORIGIN
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Real Python: Build Real-World Python Skills |
| Meta Description | Build real-world Python skills by doing: expert-written tutorials with interactive quizzes and coding exercises, video courses, and an AI mentor that guides you at every level. |
| Canonical | https://realpython.com/ |
| Open Graph Title | Real Python: Build Real-World Python Skills |
| Open Graph Description | Build real-world Python skills by doing: expert-written tutorials with interactive quizzes and coding exercises, video courses, and an AI mentor that guides you at every level. |
| Open Graph Image | https://realpython.com/static/social-default-image.5e1aa4... |
| Twitter Card | summary |
| Twitter Image | https://realpython.com/static/social-default-image.5e1aa4... |
Title Real Python: Build Real-World Python Skills Meta Description Build real-world Python skills by doing: expert-written tutorials with interactive quizzes and coding exercises, video courses, and an AI mentor that guides you at every level. Canonical https://realpython.com/ Open Graph Title Real Python: Build Real-World Python Skills Open Graph Description Build real-world Python skills by doing: expert-written tutorials with interactive quizzes and coding exercises, video courses, and an AI mentor that guides you at every level. Open Graph Image https://realpython.com/static/social-default-image.5e1aa4... Twitter Card summary Twitter Image https://realpython.com/static/social-default-image.5e1aa4... Detected Technologies
| Technology | Bootstrap jQuery Google Analytics Google Tag Manager Cloudflare |
Technology Bootstrap jQuery Google Analytics Google Tag Manager Cloudflare
HTTP Headers
| Date
| Mon, 31 Aug 2026 00:29:12 GMT |
| Content-type
| text/html; charset=utf-8 |
| Cross-origin-opener-policy
| same-origin |
| Nel
| {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1} |
| Referrer-policy
| strict-origin-when-cross-origin |
| Report-to
| {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=5WcW8uEXeNB8dp6TAh80WGjNEnaruLe6wDA5SlVvpJE%3D\u0026sid=67ff5de4-ad2b-4112-9289-cf96be89efed\u0026ts=1788136152"}],"max_age":3600} |
| Reporting-endpoints
| heroku-nel="https://nel.heroku.com/reports?s=5WcW8uEXeNB8dp6TAh80WGjNEnaruLe6wDA5SlVvpJE%3D&sid=67ff5de4-ad2b-4112-9289-cf96be89efed&ts=1788136152" |
| Server
| cloudflare |
| Set-cookie
| cid=64a78d751e4144e79308c3e3a50b9b23; expires=Tue, 31 Aug 2027 00:29:12 GMT; Max-Age=31536000; Path=/ |
| Strict-transport-security
| max-age=31536000; includeSubDomains; preload |
| Vary
| Cookie, Accept-Encoding |
| Via
| 2.0 heroku-router |
| X-content-type-options
| nosniff |
| X-frame-options
| SAMEORIGIN |
| Cf-cache-status
| DYNAMIC |
| Content-encoding
| gzip |
| Cf-ray
| a337eb671e8cbb7b-CDG |
| Alt-svc
| h3=":443"; ma=86400 |
Meta Tags
| Author | Real Python |
| Description | Build real-world Python skills by doing: expert-written tutorials with interactive quizzes and coding exercises, video courses, and an AI mentor that guides you at every level. |
| Viewport | width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover |
| Theme-color | #18354c |
| Color-scheme | light dark |
| Apple-mobile-web-app-title | Real Python |
Date Mon, 31 Aug 2026 00:29:12 GMT
Content-type text/html; charset=utf-8
Cross-origin-opener-policy same-origin
Nel {"report_to":"heroku-nel","response_headers":["Via"],"max_age":3600,"success_fraction":0.01,"failure_fraction":0.1}
Referrer-policy strict-origin-when-cross-origin
Report-to {"group":"heroku-nel","endpoints":[{"url":"https://nel.heroku.com/reports?s=5WcW8uEXeNB8dp6TAh80WGjNEnaruLe6wDA5SlVvpJE%3D\u0026sid=67ff5de4-ad2b-4112-9289-cf96be89efed\u0026ts=1788136152"}],"max_age":3600}
Reporting-endpoints heroku-nel="https://nel.heroku.com/reports?s=5WcW8uEXeNB8dp6TAh80WGjNEnaruLe6wDA5SlVvpJE%3D&sid=67ff5de4-ad2b-4112-9289-cf96be89efed&ts=1788136152"
Server cloudflare
Set-cookie cid=64a78d751e4144e79308c3e3a50b9b23; expires=Tue, 31 Aug 2027 00:29:12 GMT; Max-Age=31536000; Path=/
Strict-transport-security max-age=31536000; includeSubDomains; preload
Vary Cookie, Accept-Encoding
Via 2.0 heroku-router
X-content-type-options nosniff
X-frame-options SAMEORIGIN
Cf-cache-status DYNAMIC
Content-encoding gzip
Cf-ray a337eb671e8cbb7b-CDG
Alt-svc h3=":443"; ma=86400
