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Visualiseur d’en-têtes HTTP

Affichez les en-têtes de requête HTTP envoyés par votre navigateur.

En-têteValeur
accept*/*
accept-encodinggzip, br, zstd, deflate
hostiplookinfo.com
link<https://iplookinfo.com/tools/http-headers>; rel="alternate"; hreflang="en", <https://iplookinfo.com/zh/tools/http-headers>; rel="alternate"; hreflang="zh", <https://iplookinfo.com/es/tools/http-headers>; rel="alternate"; hreflang="es", <https://iplookinfo.com/pt/tools/http-headers>; rel="alternate"; hreflang="pt", <https://iplookinfo.com/ru/tools/http-headers>; rel="alternate"; hreflang="ru", <https://iplookinfo.com/ja/tools/http-headers>; rel="alternate"; hreflang="ja", <https://iplookinfo.com/de/tools/http-headers>; rel="alternate"; hreflang="de", <https://iplookinfo.com/fr/tools/http-headers>; rel="alternate"; hreflang="fr", <https://iplookinfo.com/it/tools/http-headers>; rel="alternate"; hreflang="it", <https://iplookinfo.com/nl/tools/http-headers>; rel="alternate"; hreflang="nl", <https://iplookinfo.com/pl/tools/http-headers>; rel="alternate"; hreflang="pl", <https://iplookinfo.com/uk/tools/http-headers>; rel="alternate"; hreflang="uk", <https://iplookinfo.com/tr/tools/http-headers>; rel="alternate"; hreflang="tr", <https://iplookinfo.com/ar/tools/http-headers>; rel="alternate"; hreflang="ar", <https://iplookinfo.com/fa/tools/http-headers>; rel="alternate"; hreflang="fa", <https://iplookinfo.com/he/tools/http-headers>; rel="alternate"; hreflang="he", <https://iplookinfo.com/sv/tools/http-headers>; rel="alternate"; hreflang="sv", <https://iplookinfo.com/cs/tools/http-headers>; rel="alternate"; hreflang="cs", <https://iplookinfo.com/ro/tools/http-headers>; rel="alternate"; hreflang="ro", <https://iplookinfo.com/el/tools/http-headers>; rel="alternate"; hreflang="el", <https://iplookinfo.com/hu/tools/http-headers>; rel="alternate"; hreflang="hu", <https://iplookinfo.com/da/tools/http-headers>; rel="alternate"; hreflang="da", <https://iplookinfo.com/tools/http-headers>; rel="alternate"; hreflang="x-default"
set-cookieNEXT_LOCALE=fr; Path=/; SameSite=lax
user-agentMozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
x-forwarded-port3000
x-middleware-set-cookieNEXT_LOCALE=fr; Path=/; SameSite=lax
x-next-intl-localefr

HTTP request headers

Every request your browser makes carries headers: the User-Agent, accepted languages and content types, client hints such as Sec-CH-UA, and fetch metadata like Sec-Fetch-Site. Servers use them for content negotiation, security decisions and analytics.

Proxies and CDNs may add or change headers, so this page is also a quick way to see what actually reaches a web server from your connection.

Questions fréquentes

Why don't you show cookies?

Cookie and Authorization headers can contain session secrets, so we never display or log them.

What are client hints?

Sec-CH-UA headers are a structured, privacy-preserving replacement for the user agent string in Chromium browsers.

Outils associés

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Test de fuite WebRTC

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Détection de proxy et VPN

Détectez les adresses IP Tor, VPN, proxy et de centres de données.

Vérification de liste noire IP

Vérifiez une IP dans les principales listes noires anti-spam basées sur le DNS (DNSBL).

Recherche WHOIS / RDAP

Données d’enregistrement des IP, ASN et domaines.

Recherche DNS

Interrogez les enregistrements A, AAAA, MX, TXT, NS, CNAME, SOA et CAA.

Calculateur CIDR / sous-réseau

Réseau, broadcast, masque et plage d’hôtes pour IPv4 et IPv6.

Visualiseur d’en-têtes HTTP | IPLookInfo