https://http.dev/x-frame-options?ref=http.app
X-Frame-Options - Expert Guide to HTTP headers
Apr 4, 2026 - Prevent clickjacking with X-Frame-Options. Control frame embedding with DENY, SAMEORIGIN, and the CSP frame-ancestors alternative.
options expert guideframehttpheaders
https://http.dev/x-content-type-options
X-Content-Type-Options - Expert Guide to HTTP headers
Apr 4, 2026 - Prevent MIME sniffing attacks with X-Content-Type-Options: nosniff. Force browsers to respect the declared Content-Type on every response.
options expert guidecontent typehttpheaders
https://http.dev/x-frame-options
X-Frame-Options - Expert Guide to HTTP headers
Apr 4, 2026 - Prevent clickjacking with X-Frame-Options. Control frame embedding with DENY, SAMEORIGIN, and the CSP frame-ancestors alternative.
options expert guideframehttpheaders
https://http.dev/options?ref=http.app
OPTIONS - Expert Guide to HTTP methods
Apr 4, 2026 - HTTP OPTIONS queries allowed methods and server capabilities. Primary role in CORS preflight requests, Access-Control headers, and wildcard request targets.
options expert guidehttpmethods
https://http.dev/options
OPTIONS - Expert Guide to HTTP methods
Apr 4, 2026 - HTTP OPTIONS queries allowed methods and server capabilities. Primary role in CORS preflight requests, Access-Control headers, and wildcard request targets.
options expert guidehttpmethods
https://http.dev/x-download-options
X-Download-Options - Expert Guide to HTTP headers
Apr 4, 2026 - Block direct file opening with X-Download-Options: noopen. Prevent downloaded files from executing in the hosting site's security context.
options expert guidedownloadhttpheaders