Informations Techniques
| Code de Statut HTTP | 200 |
| Version HTTP | HTTP/1.1 |
| HTTPS | ✔ Disponible |
| Adresse IP | 151.101.121.91 |
| Logiciel Serveur | Google Frontend |
| CDN | CDN (MISS, HIT) |
| Compression | gzip |
Code de Statut HTTP 200
Version HTTP HTTP/1.1
HTTPS ✔ Disponible
Adresse IP 151.101.121.91
Logiciel Serveur Google Frontend
CDN CDN (MISS, HIT)
Compression gzip
Chaîne de Redirection
| # | URL | Code de Statut HTTP | Statut |
| 1 | https://developer.mozilla.org:443 | 302 | HTTP/2 302 |
| 2 | https://developer.mozilla.org/en-US/ | 200 | HTTP/2 200 |
#1 URL https://developer.mozilla.org:443
Code de Statut HTTP 302
Statut HTTP/2 302
#2 URL https://developer.mozilla.org/en-US/
Code de Statut HTTP 200
Statut HTTP/2 200
Performance
| Résolution DNS | 0.5 ms |
| Connexion TCP | 1.7 ms |
| Négociation TLS | 4.5 ms |
| Temps Jusqu'au Premier Octet (TTFB) | 8.1 ms |
| Téléchargement du Contenu | 0.5 ms |
| Temps de Réponse Total | 8.6 ms |
Résolution DNS 0.5 ms
Connexion TCP 1.7 ms
Négociation TLS 4.5 ms
Temps Jusqu'au Premier Octet (TTFB) 8.1 ms
Téléchargement du Contenu 0.5 ms
Temps de Réponse Total 8.6 ms
Sécurité
| HTTPS | ✔ Activé |
| HSTS | ✔ max-age=63072000 |
| CSP | ✔ Configuré |
| X-Frame-Options | ✔ DENY |
| X-Content-Type-Options | ✔ nosniff |
| Politique de Référent | strict-origin-when-cross-origin |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Activé
HSTS ✔ max-age=63072000
CSP ✔ Configuré
X-Frame-Options ✔ DENY
X-Content-Type-Options ✔ nosniff
Politique de Référent strict-origin-when-cross-origin
HTTP/2 ⚠ HTTP/1.1
Vérification SEO Rapide
| Titre | MDN Web Docs |
| Meta Description | The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps. |
| Canonique | https://developer.mozilla.org/en-US/ |
| Titre Open Graph | MDN Web Docs |
| Description Open Graph | The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps. |
| Image Open Graph | https://developer.mozilla.org/mdn-social-image.46ac2375.png |
| Twitter Card | summary |
Titre MDN Web Docs Meta Description The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps. Canonique https://developer.mozilla.org/en-US/ Titre Open Graph MDN Web Docs Description Open Graph The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps. Image Open Graph https://developer.mozilla.org/mdn-social-image.46ac2375.png Twitter Card summary Technologies Détectées
| Technologie | Google Analytics Node.js Stripe |
Technologie Google Analytics Node.js Stripe
En-têtes HTTP
| Etag
| "34b29c866c02c08f4298d4ab4cc2e18b" |
| Content-type
| text/html |
| Server
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| X-goog-stored-content-encoding
| identity |
| Referrer-policy
| strict-origin-when-cross-origin |
| X-goog-metageneration
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| X-goog-storage-class
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| X-cloud-trace-context
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| X-goog-hash
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| Content-security-policy
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| X-frame-options
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| X-goog-stored-content-length
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| X-content-type-options
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| X-goog-meta-goog-reserved-file-mtime
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| Strict-transport-security
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| Via
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| X-goog-generation
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| Expires
| Thu, 20 Aug 2026 02:11:03 GMT |
| Last-modified
| Thu, 20 Aug 2026 00:46:21 GMT |
| Cache-control
| public, max-age=3600 |
| Content-encoding
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| Accept-ranges
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| Date
| Thu, 20 Aug 2026 05:15:04 GMT |
| Age
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| X-served-by
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| X-cache
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| X-cache-hits
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| X-timer
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| Vary
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| Content-length
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Balises Meta
| Viewport | width=device-width, initial-scale=1.0 |
| Description | The MDN Web Docs site provides information about Open Web technologies including HTML, CSS, and APIs for both Web sites and progressive web apps. |
| Position | 1 |
Etag "34b29c866c02c08f4298d4ab4cc2e18b"
Content-type text/html
Server Google Frontend
X-goog-stored-content-encoding identity
Referrer-policy strict-origin-when-cross-origin
X-goog-metageneration 1
X-goog-storage-class STANDARD
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Expires Thu, 20 Aug 2026 02:11:03 GMT
Last-modified Thu, 20 Aug 2026 00:46:21 GMT
Cache-control public, max-age=3600
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