Informations Techniques
| Code de Statut HTTP | 200 |
| Version HTTP | HTTP/1.1 |
| HTTPS | ✔ Disponible |
| Adresse IP | 76.76.21.21 |
| Logiciel Serveur | Vercel |
| CDN | Vercel |
| Compression | gzip |
|
ℹ 🔵 Content Security Policy Manquante | CSP n'est pas configuré. Cela aide à prévenir les attaques XSS et l'injection de contenu. |
|
ℹ 🔵 X-Frame-Options Manquant | Le site peut être intégré dans des iframes par des tiers (risque de clickjacking). |
Code de Statut HTTP 200
Version HTTP HTTP/1.1
HTTPS ✔ Disponible
Adresse IP 76.76.21.21
Logiciel Serveur Vercel
CDN Vercel
Compression gzip
ℹ 🔵 Content Security Policy Manquante CSP n'est pas configuré. Cela aide à prévenir les attaques XSS et l'injection de contenu.
ℹ 🔵 X-Frame-Options Manquant Le site peut être intégré dans des iframes par des tiers (risque de clickjacking).
Chaîne de Redirection
| # | URL | Code de Statut HTTP | Statut |
| 1 | https://reactjs.org:443 | 308 | HTTP/2 308 |
| 2 | https://react.dev/ | 200 | HTTP/2 200 |
#1 URL https://reactjs.org:443
Code de Statut HTTP 308
Statut HTTP/2 308
#2 URL https://react.dev/
Code de Statut HTTP 200
Statut HTTP/2 200
Performance
| Résolution DNS | 31.6 ms |
| Connexion TCP | 32.6 ms |
| Négociation TLS | 7.2 ms |
| Temps Jusqu'au Premier Octet (TTFB) | 55.9 ms |
| Téléchargement du Contenu | 1.7 ms |
| Temps de Réponse Total | 57.6 ms |
Résolution DNS 31.6 ms
Connexion TCP 32.6 ms
Négociation TLS 7.2 ms
Temps Jusqu'au Premier Octet (TTFB) 55.9 ms
Téléchargement du Contenu 1.7 ms
Temps de Réponse Total 57.6 ms
Sécurité
| HTTPS | ✔ Activé |
| HSTS | ✔ max-age=63072000 |
| CSP | ⚠ Non configuré |
| X-Frame-Options | ⚠ Non configuré |
| X-Content-Type-Options | ⚠ Non configuré |
| HTTP/2 | ⚠ HTTP/1.1 |
HTTPS ✔ Activé
HSTS ✔ max-age=63072000
CSP ⚠ Non configuré
X-Frame-Options ⚠ Non configuré
X-Content-Type-Options ⚠ Non configuré
HTTP/2 ⚠ HTTP/1.1
Vérification SEO Rapide
| Meta Description | React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. |
| Canonique | https://react.dev/ |
| Titre Open Graph | React |
| Description Open Graph | React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. |
| Image Open Graph | https://react.dev/images/og-home.png |
| Twitter Card | summary_large_image |
| Titre Twitter | React |
| Description Twitter | React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. |
| Image Twitter | https://react.dev/images/og-home.png |
Meta Description React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. Canonique https://react.dev/ Titre Open Graph React Description Open Graph React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. Image Open Graph https://react.dev/images/og-home.png Twitter Card summary_large_image Titre Twitter React Description Twitter React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. Image Twitter https://react.dev/images/og-home.png Technologies Détectées
| Technologie | React Google Analytics Google Tag Manager Next.js |
Technologie React Google Analytics Google Tag Manager Next.js
En-têtes HTTP
| Access-control-allow-origin
| * |
| Age
| 113463 |
| Cache-control
| public, max-age=0, must-revalidate |
| Content-disposition
| inline |
| Content-encoding
| gzip |
| Content-type
| text/html; charset=utf-8 |
| Date
| Tue, 21 Jul 2026 21:06:38 GMT |
| Etag
| W/"15d0f47183d149f8354921f58947d274" |
| Server
| Vercel |
| Strict-transport-security
| max-age=63072000 |
| Vary
| RSC, Next-Router-State-Tree, Next-Router-Prefetch, Next-Router-Segment-Prefetch |
| X-matched-path
| / |
| X-vercel-cache
| HIT |
| X-vercel-id
| cdg1::lf7bx-1784667998849-58e040f108b5 |
Balises Meta
| Viewport | width=device-width, initial-scale=1 |
| Description | React is the library for web and native user interfaces. Build user interfaces out of individual pieces called components written in JavaScript. React is designed to let you seamlessly combine components written by independent people, teams, and organizations. |
| Fb:app_id | 623268441017527 |
| Google-site-verification | sIlAGs48RulR4DdP95YSWNKZIEtCqQmRjzn-Zq-CcD0 |
| Msapplication-TileColor | #2b5797 |
| Theme-color | #23272f |
Access-control-allow-origin *
Age 113463
Cache-control public, max-age=0, must-revalidate
Content-disposition inline
Content-encoding gzip
Content-type text/html; charset=utf-8
Date Tue, 21 Jul 2026 21:06:38 GMT
Etag W/"15d0f47183d149f8354921f58947d274"
Server Vercel
Strict-transport-security max-age=63072000
Vary RSC, Next-Router-State-Tree, Next-Router-Prefetch, Next-Router-Segment-Prefetch
X-matched-path /
X-vercel-cache HIT
X-vercel-id cdg1::lf7bx-1784667998849-58e040f108b5
