](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Bitness) Experimental 
    90. [ ` Sec-CH-UA-Full-Version ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Full-Version) Deprecated 
    91. [ ` Sec-CH-UA-Full-Version-List ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Full-Version-List) Experimental 
    92. [ ` Sec-CH-UA-Mobile ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Mobile) Experimental 
    93. [ ` Sec-CH-UA-Model ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Model) Experimental 
    94. [ ` Sec-CH-UA-Platform ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Platform) Experimental 
    95. [ ` Sec-CH-UA-Platform-Version ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA-Platform-Version) Experimental 
    96. [ ` Sec-Fetch-Dest ` ](/en-US/docs/Web/HTTP/Headers/Sec-Fetch-Dest)
    97. [ ` Sec-Fetch-Mode ` ](/en-US/docs/Web/HTTP/Headers/Sec-Fetch-Mode)
    98. [ ` Sec-Fetch-Site ` ](/en-US/docs/Web/HTTP/Headers/Sec-Fetch-Site)
    99. [ ` Sec-Fetch-User ` ](/en-US/docs/Web/HTTP/Headers/Sec-Fetch-User)
    100. [ ` Sec-GPC ` ](/en-US/docs/Web/HTTP/Headers/Sec-GPC) Experimental  Non-standard 
    101. [ ` Sec-Purpose ` ](/en-US/docs/Web/HTTP/Headers/Sec-Purpose)
    102. [ ` Sec-WebSocket-Accept ` ](/en-US/docs/Web/HTTP/Headers/Sec-WebSocket-Accept)
    103. [ ` Server ` ](/en-US/docs/Web/HTTP/Headers/Server)
    104. [ ` Server-Timing ` ](/en-US/docs/Web/HTTP/Headers/Server-Timing)
    105. [ ` Service-Worker-Navigation-Preload ` ](/en-US/docs/Web/HTTP/Headers/Service-Worker-Navigation-Preload)
    106. [ ` Set-Cookie ` ](/en-US/docs/Web/HTTP/Headers/Set-Cookie)
    107. [ ` Set-Login ` ](/en-US/docs/Web/HTTP/Headers/Set-Login) Experimental 
    108. [ ` SourceMap ` ](/en-US/docs/Web/HTTP/Headers/SourceMap)
    109. [ ` Speculation-Rules ` ](/en-US/docs/Web/HTTP/Headers/Speculation-Rules) Experimental 
    110. [ ` Strict-Transport-Security ` ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
    111. [ ` Supports-Loading-Mode ` ](/en-US/docs/Web/HTTP/Headers/Supports-Loading-Mode) Experimental 
    112. [ ` TE ` ](/en-US/docs/Web/HTTP/Headers/TE)
    113. [ ` Timing-Allow-Origin ` ](/en-US/docs/Web/HTTP/Headers/Timing-Allow-Origin)
    114. [ ` Tk ` ](/en-US/docs/Web/HTTP/Headers/Tk) Non-standard  Deprecated 
    115. [ ` Trailer ` ](/en-US/docs/Web/HTTP/Headers/Trailer)
    116. [ ` Transfer-Encoding ` ](/en-US/docs/Web/HTTP/Headers/Transfer-Encoding)
    117. [ ` Upgrade ` ](/en-US/docs/Web/HTTP/Headers/Upgrade)
    118. [ ` Upgrade-Insecure-Requests ` ](/en-US/docs/Web/HTTP/Headers/Upgrade-Insecure-Requests)
    119. [ ` User-Agent ` ](/en-US/docs/Web/HTTP/Headers/User-Agent)
    120. [ ` Vary ` ](/en-US/docs/Web/HTTP/Headers/Vary)
    121. [ ` Via ` ](/en-US/docs/Web/HTTP/Headers/Via)
    122. [ ` Viewport-Width ` ](/en-US/docs/Web/HTTP/Headers/Viewport-Width) Non-standard  Deprecated 
    123. [ ` Want-Digest ` ](/en-US/docs/Web/HTTP/Headers/Want-Digest) Non-standard  Deprecated 
    124. [ ` Warning ` ](/en-US/docs/Web/HTTP/Headers/Warning) Deprecated 
    125. [ ` Width ` ](/en-US/docs/Web/HTTP/Headers/Width) Non-standard  Deprecated 
    126. [ ` WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
    127. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
    128. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard 
    129. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard 
    130. [ ` X-Forwarded-Host ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Host) Non-standard 
    131. [ ` X-Forwarded-Proto ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Proto) Non-standard 
    132. [ ` X-Frame-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
    133. [ ` X-XSS-Protection ` ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection) Non-standard 
  19. HTTP request methods 
    1. [ ` CONNECT ` ](/en-US/docs/Web/HTTP/Methods/CONNECT)
    2. [ ` DELETE ` ](/en-US/docs/Web/HTTP/Methods/DELETE)
    3. [ ` GET ` ](/en-US/docs/Web/HTT