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HTTP header reference
ETag

← All headersResponse header

What is an ETag header?

An opaque identifier for a specific version of a resource, used for cache validation and conditional requests.

Other Response headers

Access-Control-Allow-Origin Access-Control-Allow-Credentials Access-Control-Expose-Headers Access-Control-Max-Age Access-Control-Allow-Methods Access-Control-Allow-Headers Accept-Patch Accept-Ranges Age Allow Alt-Svc Content-Disposition Content-Language Content-Location Content-Range Expires Last-Modified Link Location Proxy-Authenticate Retry-After Server Set-Cookie Strict-Transport-Security Vary WWW-Authenticate X-Frame-Options Content-Security-Policy Permissions-Policy X-Content-Type-Options X-XSS-Protection X-Powered-By X-UA-Compatible Refresh

Kawze

Uptime monitoring that tells you the moment something breaks.

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