id stringlengths 16 145 | text stringlengths 1 179k | title stringclasses 1
value |
|---|---|---|
Mmdn_HTTP/Permissions_Policy_directives_24_3.txt | owsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Ex... | |
Mmdn_HTTP/CSP_directives_23_8.txt | ctive is absent, the user agent will look for the [ ` child-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/child-src) directive (which falls back to the [ ` default-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/default-src) directive).
## Syntax
One or more sources can be allowed fo... | |
Mmdn_HTTP/HTTP_response_status_45_0.txt | * Skip to main content
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[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
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* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/CSP_directives_14_3.txt | ` RTT ` ](/en-US/docs/Web/HTTP/Headers/RTT) Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Hea... | |
Mmdn_HTTP/HTTP_response_status_16_7.txt | tal
10. [ Permissions-Policy: encrypted-media ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/encrypted-media) Experimental
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execu... | |
Mmdn_HTTP/HTTP_response_status_48_1.txt | rotocol upgrade mechanism ](/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/H... | |
Mmdn_HTTP/HTTP_headers_26_9.txt | d on Apr 26, 2024 by [ MDN contributors ](/en-
US/docs/Web/HTTP/Headers/Content-Encoding/contributors.txt) .
[ View this page on GitHub
](https://github.com/mdn/content/blob/main/files/en-
us/web/http/headers/content-encoding/index.md?plain=1 "Folder: en-
us/web/http/headers/content-encoding \(Opens in a new tab\)"... | |
Mmdn_HTTP/HTTP_headers_33_9.txt | N contributors ](/en-
US/docs/Web/HTTP/Headers/Want-Digest/contributors.txt) .
[ View this page on GitHub
](https://github.com/mdn/content/blob/main/files/en-us/web/http/headers/want-
digest/index.md?plain=1 "Folder: en-us/web/http/headers/want-digest \(Opens in
a new tab\)") ⢠[ Report a problem with this content
... | |
Mmdn_HTTP/HTTP_headers_2_8.txt | pgrade
mechanisms of [ ` upgrade-insecure-requests ` ](/en-
US/docs/Web/HTTP/Headers/Content-Security-Policy/upgrade-insecure-requests) :
http
GET / HTTP/1.1
Host: example.com
Upgrade-Insecure-Requests: 1
The server can now redirect to a secure version of the site. A [ ` Vary `
](/en-US/do... | |
Mmdn_HTTP/Permissions_Policy_directives_20_3.txt | /Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers... | |
Mmdn_HTTP/Permissions_Policy_directives_26_5.txt | d Dependency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [ ` 425 Too Early ` ](/en-US/docs/Web/HTTP/Status/425)
46. [ ` 426 Upgrade Required ` ](/en-US/docs/Web/HTTP/Status/426)
47. [ ` 428 Precondition Required ` ](/en-US/docs/Web/HTTP/Status/428)
48. [ ` 429 Too Many Requests ` ](/en-US/docs/Web/HTTP/Sta... | |
Mmdn_HTTP/Permissions_Policy_directives_35_7.txt | Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
13. [ Permissions-Policy: fullscreen ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/fullscreen)
14. _[ Permissions-Policy: gamepad ](/en-US/docs/Web/HTTP/Headers/Permission... | |
Mmdn_HTTP/HTTP_headers_11_4.txt | 128. [ ` Warning ` ](/en-US/docs/Web/HTTP/Headers/Warning) Deprecated
129. [ ` Width ` ](/en-US/docs/Web/HTTP/Headers/Width) Non-standard Deprecated
130. [ ` WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-... | |
Mmdn_HTTP/HTTP_response_status_2_4.txt | 30. [ ` WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs... | |
Mmdn_HTTP/Permissions_Policy_directives_33_9.txt | la.org
contributors. Content available under [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .
*[
Non-standard
]: Non-standard. Check cross-browser support before using.
*[
... | |
Mmdn_HTTP/HTTP_headers_29_3.txt | (/en-US/docs/Web/HTTP/Headers/RTT) Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-... | |
Mmdn_HTTP/HTTP_response_status_44_0.txt | * Skip to main content
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* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_response_status_16_6.txt | rs/Content-Security-Policy/script-src)
24. [ ` CSP: script-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content... | |
Mmdn_HTTP/CSP_directives_29_2.txt | TP/Headers/Content-Location)
33. [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
3... | |
Mmdn_HTTP/Permissions_Policy_directives_8_1.txt | port-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
4. [ X-Frame-Options ](/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
5. [ X-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
6. [ Mozilla web security guidelines ](https://wiki.mozilla.org/Se... | |
Mmdn_HTTP/Permissions_Policy_directives_32_6.txt | S/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem)
29. [ ` CSP: trusted-types ` ](/en-US/docs/Web/... | |
Mmdn_HTTP/CSP_directives_25_11.txt | docs/Web/HTML/Element/script)
* [ ` script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
* [ ` script-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
## Help improve MDN
Was this page helpful to you?
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[ Learn how to contribute
](htt... | |
Mmdn_HTTP/Permissions_Policy_directives_11_6.txt | rity-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem)
29. [ ` CSP: trusted-types ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy... | |
Mmdn_HTTP/HTTP_headers_17_4.txt | 132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard
134. [ ` X-Forwarded-Host ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Host) Non-standard
135. [ ` X-Forwarded-Pr... | |
Mmdn_HTTP/HTTP_headers_38_5.txt | TP/Status/415)
38. [ ` 416 Range Not Satisfiable ` ](/en-US/docs/Web/HTTP/Status/416)
39. [ ` 417 Expectation Failed ` ](/en-US/docs/Web/HTTP/Status/417)
40. [ ` 418 I'm a teapot ` ](/en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unp... | |
Mmdn_HTTP/HTTP_response_status_34_5.txt | TP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [ ` 425 Too Early ... | |
Mmdn_HTTP/HTTP_response_status_55_1.txt | rotocol upgrade mechanism ](/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/H... | |
Mmdn_HTTP/Permissions_Policy_directives_21_6.txt | ity-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/sty... | |
Mmdn_HTTP/HTTP_response_status_28_2.txt | Headers/Content-Length)
32. [ ` Content-Location ` ](/en-US/docs/Web/HTTP/Headers/Content-Location)
33. [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ... | |
Mmdn_HTTP/CSP_directives_22_4.txt | /Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-s... | |
Mmdn_HTTP/HTTP_request_methods_5_4.txt | -US/docs/Web/HTTP/Headers/Width) Non-standard Deprecated
130. [ ` WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Con... | |
Mmdn_HTTP/CSP_directives_20_0.txt | * Skip to main content
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Mmdn_HTTP/HTTP_response_status_59_3.txt | Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers-Reduced-... | |
Mmdn_HTTP/Permissions_Policy_directives_6_7.txt | : execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
13. [ Permissions-Policy: fullscreen ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/fullscreen)
14. [ Permissions-Policy: gamepad ](/en-US/docs/Web/HTTP/Headers/Permissions-Polic... | |
Mmdn_HTTP/Permissions_Policy_directives_17_3.txt | ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
... | |
Mmdn_HTTP/CSP_directives_25_3.txt | Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experiment... | |
Mmdn_HTTP/HTTP_response_status_49_3.txt | ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers-Reduced-Transparency ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Transparency) Experimental
89. [ ` Sec-CH-UA ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA) Experimental
90. [ ` Sec-CH-UA-Arch ` ]... | |
Mmdn_HTTP/Permissions_Policy_directives_9_6.txt | /Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Head... | |
Mmdn_HTTP/CSP_directives_23_2.txt | ion)
33. [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
36. [ ` Content-Type ` ](... | |
Mmdn_HTTP/HTTP_response_status_55_5.txt | en-US/docs/Web/HTTP/Status/418)
41. [ ` 421 Misdirected Request ` ](/en-US/docs/Web/HTTP/Status/421)
42. [ ` 422 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ ` 424 Failed Dependency ` ](/en-US/docs/Web/HTTP/Status/424)
45. [... | |
Mmdn_HTTP/Permissions_Policy_directives_35_6.txt | aders/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-elem)
29. [ ` CSP: trusted-types ` ](/en-US/docs/Web/HTTP/Headers/Conte... | |
Mmdn_HTTP/HTTP_headers_2_4.txt | aders/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard
... | |
Mmdn_HTTP/Header_Field_Definitions_41_0.txt | ### 14.34 Proxy-Authorization
The Proxy-Authorization request-header field allows the client to identify
itself (or its user) to a proxy which requires authentication. The Proxy-
Authorization field value consists of credentials containing the
authentication information of the user agent for the proxy and/or realm o... | |
Mmdn_HTTP/HTTP_response_status_50_7.txt |
10. [ Permissions-Policy: encrypted-media ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/encrypted-media) Experimental
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution... | |
Mmdn_HTTP/CSP_directives_20_7.txt | -domain ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/document-domain) Experimental
10. [ Permissions-Policy: encrypted-media ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/encrypted-media) Experimental
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Po... | |
Mmdn_HTTP/CSP_directives_24_6.txt | olicy/script-src)
24. [ ` CSP: script-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/styl... | |
Mmdn_HTTP/Permissions_Policy_directives_26_3.txt | H-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers-Reduced-Transparency ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Transparency) Experimental
89. [ ` Sec-CH-UA ` ](/en-... | |
Mmdn_HTTP/Permissions_Policy_directives_12_9.txt | ttps://foundation.mozilla.org/) .
Portions of this content are ©1998â 2024 by individual mozilla.org
contributors. Content available under [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .
*[
Non-standard
... | |
Mmdn_HTTP/CSP_directives_4_4.txt | ders/Width) Non-standard Deprecated
130. [ ` WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard
... | |
Mmdn_HTTP/HTTP_request_methods_5_3.txt | ers/RTT) Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) E... | |
Mmdn_HTTP/HTTP_headers_14_0.txt | * Skip to main content
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[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_response_status_14_6.txt | attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en... | |
Mmdn_HTTP/HTTP_headers_11_1.txt | /docs/Web/HTTP/Session)
6. [ Connection management in HTTP/1.x ](/en-US/docs/Web/HTTP/Connection_management_in_HTTP_1.x)
7. [ Protocol upgrade mechanism ](/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict ... | |
Mmdn_HTTP/Permissions_Policy_directives_1_6.txt | -src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP: style-src-elem ` ](... | |
Mmdn_HTTP/Header_Field_Definitions_11_0.txt | ### 14.9.2 What May be Stored by Caches
no-store
The purpose of the no-store directive is to prevent the inadvertent release or retention of sensitive information (for example, on backup tapes). The no-store directive applies to the entire message, and MAY be sent either in a response or in a request. If sent ... | |
Mmdn_HTTP/Header_Field_Definitions_40_0.txt | ### 14.33 Proxy-Authenticate
The Proxy-Authenticate response-header field MUST be included as part of a 407
(Proxy Authentication Required) response. The field value consists of a
challenge that indicates the authentication scheme and parameters applicable
to the proxy for this Request-URI.
Pro... | |
Mmdn_HTTP/CSP_directives_10_1.txt |
6. [ Connection management in HTTP/1.x ](/en-US/docs/Web/HTTP/Connection_management_in_HTTP_1.x)
7. [ Protocol upgrade mechanism ](/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HST... | |
Mmdn_HTTP/HTTP_headers_3_0.txt | * Skip to main content
* Skip to search
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[ MDN Web Docs ](/en-US/) Open main menu
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* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_headers_14_1.txt | Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
... | |
Mmdn_HTTP/Permissions_Policy_directives_1_7.txt | ution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
13. [ Permissions-Policy: fullscreen ]... | |
Mmdn_HTTP/Permissions_Policy_directives_28_9.txt | cipation Guidelines ](https://www.mozilla.org/about/governance/policies/participation/)
Visit [ Mozilla Corporationâs ](https://www.mozilla.org) not-for-profit
parent, the [ Mozilla Foundation ](https://foundation.mozilla.org/) .
Portions of this content are ©1998â 2024 by individual mozilla.org
contributor... | |
Mmdn_HTTP/CSP_directives_12_3.txt | erimental
85. [ ` Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-... | |
Mmdn_HTTP/CSP_directives_1_1.txt | Session)
6. [ Connection management in HTTP/1.x ](/en-US/docs/Web/HTTP/Connection_management_in_HTTP_1.x)
7. [ Protocol upgrade mechanism ](/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Secur... | |
Mmdn_HTTP/Permissions_Policy_directives_30_6.txt | 25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src-attr)
28. [ ` CSP:... | |
Mmdn_HTTP/HTTP_response_status_1_9.txt | ps://www.mozilla.org/privacy/websites/)
* [ Cookies ](https://www.mozilla.org/privacy/websites/#cookies)
* [ Legal ](https://www.mozilla.org/about/legal/terms/mozilla)
* [ Community Participation Guidelines ](https://www.mozilla.org/about/governance/policies/participation/)
Visit [ Mozilla Corporationâs ](htt... | |
Mmdn_HTTP/HTTP_response_status_47_4.txt | eaders/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard
... | |
Mmdn_HTTP/Permissions_Policy_directives_18_7.txt | HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
13. [ Permissions-Policy: fullscreen ](/en-US/docs/Web/HTTP/Headers/Permissions-P... | |
Mmdn_HTTP/HTTP_headers_35_4.txt | ](/en-US/docs/Web/HTTP/Headers/Width) Non-standard Deprecated
130. [ ` WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefet... | |
Mmdn_HTTP/Permissions_Policy_directives_24_1.txt | TP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
4. [ X-Frame-Options ](/en-US/docs/Web/HTTP/... | |
Mmdn_HTTP/HTTP_response_status_30_7.txt | tal
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
... | |
Mmdn_HTTP/HTTP_headers_6_4.txt | WWW-Authenticate ` ](/en-US/docs/Web/HTTP/Headers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTT... | |
Mmdn_HTTP/HTTP_headers_27_0.txt | * Skip to main content
* Skip to search
* Skip to select language
[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_response_status_3_6.txt | ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/style-src)
27. [ ` CSP: style-src-attr ` ](/en-US/doc... | |
Mmdn_HTTP/Permissions_Policy_directives_30_3.txt | /en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics) Experimental Non-standard
86. [ ` Sec-CH-Prefers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88... | |
Mmdn_HTTP/HTTP_response_status_2_1.txt | (/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Content-Type-Options ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-... | |
Mmdn_HTTP/HTTP_response_status_35_1.txt | on_management_in_HTTP_1.x)
7. [ Protocol upgrade mechanism ](/en-US/docs/Web/HTTP/Protocol_upgrade_mechanism)
5. HTTP security
1. [ Content Security Policy (CSP) ](/en-US/docs/Web/HTTP/CSP)
2. [ HTTP Strict Transport Security (HSTS) ](/en-US/docs/Web/HTTP/Headers/Strict-Transport-Security)
3. [ X-Con... | |
Mmdn_HTTP/Permissions_Policy_directives_35_2.txt | ty-Policy-Report-Only ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
36. [ ` Content-Type ` ](/en-US/docs/Web/HTTP/Headers/Content-Type)
37. [ ` Cookie ` ](/en-US/docs/Web/HTTP/Headers/Cookie)
38. [ ` Critical-CH ` ](/en-US/docs/Web/HTTP/Headers/Critical-CH) Experimental
39. [ ` ... | |
Mmdn_HTTP/CSP_directives_26_9.txt | ntent-Security-Policy: style-src 'sha256-ozBpjL6dxO8fsS4u6fwG1dFDACYvpNxYeBA6tzR+FY8='
When generating the hash, don't include the [ ` <style> ` ](/en-
US/docs/Web/HTML/Element/style) tags and note that capitalization and
whitespace matter, including leading or trailing whitespace.
html
<style>
... | |
Mmdn_HTTP/HTTP_response_status_58_6.txt | s/Content-Security-Policy/script-src)
24. [ ` CSP: script-src-attr ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-attr)
25. [ ` CSP: script-src-elem ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/script-src-elem)
26. [ ` CSP: style-src ` ](/en-US/docs/Web/HTTP/Headers/Content-... | |
Mmdn_HTTP/HTTP_headers_18_4.txt | /docs/Web/HTTP/Headers/X-Forwarded-Host) Non-standard
135. [ ` X-Forwarded-Proto ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Proto) Non-standard
136. [ ` X-Frame-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Frame-Options)
137. [ ` X-XSS-Protection ` ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection) Non-stan... | |
Mmdn_HTTP/HTTP_response_status_57_4.txt | ers/WWW-Authenticate)
131. [ ` X-Content-Type-Options ` ](/en-US/docs/Web/HTTP/Headers/X-Content-Type-Options)
132. [ ` X-DNS-Prefetch-Control ` ](/en-US/docs/Web/HTTP/Headers/X-DNS-Prefetch-Control) Non-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard
1... | |
Mmdn_HTTP/HTTP_headers_12_2.txt | rs/Content-Length)
32. [ ` Content-Location ` ](/en-US/docs/Web/HTTP/Headers/Content-Location)
33. [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ` ](/... | |
Mmdn_HTTP/HTTP_headers_33_3.txt | l
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers-Reduced-Transparency ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Transparency) Experimental
89. [ ` Sec-CH-UA ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-UA)... | |
Mmdn_HTTP/Permissions_Policy_directives_17_8.txt | ` ](/en-
US/docs/Web/API/AmbientLightSensor/AmbientLightSensor
"AmbientLightSensor\(\)") constructor calls will throw a [ ` DOMException `
](/en-US/docs/Web/API/DOMException) of type ` SecurityError ` .
## Syntax
http
Permissions-Policy: ambient-light-sensor=<allowlist>;
` <allowlist> `
A... | |
Mmdn_HTTP/HTTP_response_status_12_4.txt | ers/X-DNS-Prefetch-Control) Non-standard
133. [ ` X-Forwarded-For ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-For) Non-standard
134. [ ` X-Forwarded-Host ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Host) Non-standard
135. [ ` X-Forwarded-Proto ` ](/en-US/docs/Web/HTTP/Headers/X-Forwarded-Proto) Non-sta... | |
Mmdn_HTTP/HTTP_response_status_25_8.txt | wser with JavaScript enabled. Enable
JavaScript to view data.
## See also
* [ ` PUT ` ](/en-US/docs/Web/HTTP/Methods/PUT)
## Help improve MDN
Was this page helpful to you?
Yes No
[ Learn how to contribute
](https://github.com/mdn/content/blob/main/CONTRIBUTING.md "This will take you
to our contribution guid... | |
Mmdn_HTTP/HTTP_headers_34_8.txt | erver, the client's IP address is sent
to the server (and is often written to server access logs). But if a client
connection passes through any [ forward or reverse
](https://en.wikipedia.org/wiki/Proxy_server) proxies, the server only sees
the final proxy's IP address, which is often of little use. That's especially
... | |
Mmdn_HTTP/HTTP_response_status_27_9.txt | la.org
contributors. Content available under [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .
*[
Non-standard
]: Non-standard. Check cross-browser support before using.
*[
... | |
Mmdn_HTTP/HTTP_headers_10_9.txt | ch
\(Opens in a new tab\)") ⢠[ Report a problem with this content
](https://github.com/mdn/content/issues/new?template=page-report.yml&mdn-
url=https%3A%2F%2Fdeveloper.mozilla.org%2Fen-
US%2Fdocs%2FWeb%2FHTTP%2FHeaders%2FIf-None-
Match&metadata=%3C%21--+Do+not+make+changes+below+this+line+--%3E%0A%3Cdetails%3E%0A%3... | |
Mmdn_HTTP/HTTP_headers_22_3.txt | efers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers-Reduced-Transparency ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Transparency) Experimental
89. [ ` Sec-CH-UA ` ](/en-US/d... | |
Mmdn_HTTP/Header_Field_Definitions_30_0.txt | ### 14.23 Host
The Host request-header field specifies the Internet host and port number of
the resource being requested, as obtained from the original URI given by the
user or referring resource (generally an HTTP URL,
as described in section [ 3.2.2 ](rfc2616-sec3.html#sec3.2.2) ). The Host
field value MUST repre... | |
Mmdn_HTTP/Permissions_Policy_directives_24_7.txt | al
11. [ Permissions-Policy: execution-while-not-rendered ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-not-rendered) Experimental
12. [ Permissions-Policy: execution-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-while-out-of-viewport) Experimental
... | |
Mmdn_HTTP/HTTP_response_status_53_0.txt | * Skip to main content
* Skip to search
* Skip to select language
[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/CSP_directives_30_0.txt | * Skip to main content
* Skip to search
* Skip to select language
[ MDN Web Docs ](/en-US/) Open main menu
* References [ References ](/en-US/docs/Web)
* [ Overview / Web Technology Web technology reference for developers ](/en-US/docs/Web)
* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_headers_24_2.txt | ocs/Web/HTTP/Headers/Content-Type)
37. [ ` Cookie ` ](/en-US/docs/Web/HTTP/Headers/Cookie)
38. [ ` Critical-CH ` ](/en-US/docs/Web/HTTP/Headers/Critical-CH) Experimental
39. [ ` Cross-Origin-Embedder-Policy ` ](/en-US/docs/Web/HTTP/Headers/Cross-Origin-Embedder-Policy)
40. [ ` Cross-Origin-Opener-Polic... | |
Mmdn_HTTP/HTTP_headers_11_12.txt | s/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
* [ Learn about: Content Security Policy ](/en-US/docs/Web/HTTP/CSP)
* [ Content Security in WebExtensions ](/en-US/docs/Mozilla/Add-ons/WebExtensions/Content_Security_Policy)
* [ Adopting a strict policy ](https://csp.withgoogle.com/docs/strict-csp.html)
... | |
Mmdn_HTTP/Permissions_Policy_directives_16_2.txt | . [ ` Content-Range ` ](/en-US/docs/Web/HTTP/Headers/Content-Range)
34. [ ` Content-Security-Policy ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy)
35. [ ` Content-Security-Policy-Report-Only ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Only)
36. [ ` Content-Type ` ](/en-US/docs... | |
Mmdn_HTTP/HTTP_headers_25_3.txt | s/Reporting-Endpoints)
81. [ ` Repr-Digest ` ](/en-US/docs/Web/HTTP/Headers/Repr-Digest) Experimental
82. [ ` Retry-After ` ](/en-US/docs/Web/HTTP/Headers/Retry-After)
83. [ ` RTT ` ](/en-US/docs/Web/HTTP/Headers/RTT) Experimental
84. [ ` Save-Data ` ](/en-US/docs/Web/HTTP/Headers/Save-Data) Experimen... | |
Mmdn_HTTP/HTTP_response_status_42_3.txt | ers-Color-Scheme ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Color-Scheme) Experimental
87. [ ` Sec-CH-Prefers-Reduced-Motion ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Motion) Experimental
88. [ ` Sec-CH-Prefers-Reduced-Transparency ` ](/en-US/docs/Web/HTTP/Headers/Sec-CH-Prefers-Reduced-Tra... | |
Mmdn_HTTP/List_of_HTTP_header_fields_10_0.txt | ## References [ [ edit
](/w/index.php?title=List_of_HTTP_header_fields&action=edit§ion=14 "Edit
section: References") ]
1. ** ^ ** [ "Field Parsing" ](https://datatracker.ietf.org/doc/html/rfc7230#section-3.2.4) . [ _Hypertext Transfer Protocol (HTTP/1.1): Message Syntax and Routing_ ](https://datatracker.ie... |
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