Technical Information
| HTTP Status Code | 200 |
| HTTP Version | HTTP/1.1 |
| HTTPS | ✔ Available |
| IP Address | 199.36.158.100 |
| CDN | CDN (HIT) |
| 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 199.36.158.100
CDN CDN (HIT)
Compression gzip
ℹ 🔵 Missing Content Security Policy CSP is not configured. It helps prevent XSS attacks and content injection.
Redirect Chain
| # | URL | HTTP Status Code | Status |
| 1 | https://dartlang.org:443 | 301 | HTTP/2 301 |
| 2 | https://www.dartlang.org/ | 301 | HTTP/2 301 |
| 3 | https://dart.dev | 200 | HTTP/2 200 |
#1 URL https://dartlang.org:443
HTTP Status Code 301
Status HTTP/2 301
#2 URL https://www.dartlang.org/
HTTP Status Code 301
Status HTTP/2 301
#3 URL https://dart.dev
HTTP Status Code 200
Status HTTP/2 200
Performance
| DNS Lookup | 29 ms |
| TCP Connect | 30.1 ms |
| TLS Handshake | 6.4 ms |
| Time To First Byte (TTFB) | 39 ms |
| Content Download | 0.7 ms |
| Total Response Time | 39.6 ms |
DNS Lookup 29 ms
TCP Connect 30.1 ms
TLS Handshake 6.4 ms
Time To First Byte (TTFB) 39 ms
Content Download 0.7 ms
Total Response Time 39.6 ms
Security
| HTTPS | ✔ Enabled |
| HSTS | ✔ max-age=31556926 |
| CSP | ⚠ Not configured |
| X-Frame-Options | ✔ DENY |
| X-Content-Type-Options | ✔ nosniff |
| Referrer Policy | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Enabled
HSTS ✔ max-age=31556926
CSP ⚠ Not configured
X-Frame-Options ✔ DENY
X-Content-Type-Options ✔ nosniff
Referrer Policy strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
SEO Quick Check
| Title | Dart programming language |
| Meta Description | Dart is an approachable, portable, and productive language for high-quality apps on any platform. |
| Open Graph Title | Dart programming language |
| Open Graph Description | Dart is an approachable, portable, and productive language for high-quality apps on any platform. |
| Open Graph Image | https://dart.dev/assets/img/logo/dart-logo-for-shares.png |
| Twitter Card | summary |
| Twitter Title | Dart programming language |
| Twitter Description | Dart is an approachable, portable, and productive language for high-quality apps on any platform. |
Title Dart programming language Meta Description Dart is an approachable, portable, and productive language for high-quality apps on any platform. Open Graph Title Dart programming language Open Graph Description Dart is an approachable, portable, and productive language for high-quality apps on any platform. Open Graph Image https://dart.dev/assets/img/logo/dart-logo-for-shares.png Twitter Card summary Twitter Title Dart programming language Twitter Description Dart is an approachable, portable, and productive language for high-quality apps on any platform. Detected Technologies
| Technology | Google Analytics Google Tag Manager |
Technology Google Analytics Google Tag Manager
HTTP Headers
| Cache-control
| max-age=3600 |
| Content-encoding
| gzip |
| Content-security-policy-report-only
| script-src 'self' |
| Content-type
| text/html; charset=utf-8 |
| Etag
| "be75e60bb658159646820fec159e4afe188f14e294f294d962032bb16005c90c" |
| Last-modified
| Mon, 17 Aug 2026 18:07:40 GMT |
| Referrer-policy
| strict-origin-when-cross-origin |
| Strict-transport-security
| max-age=31556926 |
| X-content-type-options
| nosniff |
| X-frame-options
| DENY |
| X-xss-protection
| 1;mode=block |
| Accept-ranges
| bytes |
| Date
| Thu, 20 Aug 2026 07:47:53 GMT |
| X-served-by
| cache-par-lfpb1150028-PAR |
| X-cache
| HIT |
| X-cache-hits
| 0 |
| X-timer
| S1787212074.644340,VS0,VE1 |
| Vary
| x-fh-requested-host, accept-encoding |
| Alt-svc
| h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400 |
| Content-length
| 15066 |
Meta Tags
| Description | Dart is an approachable, portable, and productive language for high-quality apps on any platform. |
| Viewport | width=device-width, initial-scale=1.0 |
Cache-control max-age=3600
Content-encoding gzip
Content-security-policy-report-only script-src 'self'
Content-type text/html; charset=utf-8
Etag "be75e60bb658159646820fec159e4afe188f14e294f294d962032bb16005c90c"
Last-modified Mon, 17 Aug 2026 18:07:40 GMT
Referrer-policy strict-origin-when-cross-origin
Strict-transport-security max-age=31556926
X-content-type-options nosniff
X-frame-options DENY
X-xss-protection 1;mode=block
Accept-ranges bytes
Date Thu, 20 Aug 2026 07:47:53 GMT
X-served-by cache-par-lfpb1150028-PAR
X-cache HIT
X-cache-hits 0
X-timer S1787212074.644340,VS0,VE1
Vary x-fh-requested-host, accept-encoding
Alt-svc h3=":443";ma=86400,h3-29=":443";ma=86400,h3-27=":443";ma=86400
Content-length 15066
