id stringlengths 16 145 | text stringlengths 1 179k | title stringclasses 1
value |
|---|---|---|
Mmdn_HTTP/Permissions_Policy_directives_14_7.txt | /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-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/P... | |
Mmdn_HTTP/Permissions_Policy_directives_12_1.txt | otocol_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)
4. [ X-Fram... | |
Mmdn_HTTP/HTTP_request_methods_1_6.txt | [ ` 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/style-src)
27. [ ` CSP: st... | |
Mmdn_HTTP/HTTP_request_methods_8_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)
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* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_headers_18_6.txt | m ` ](/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/trusted-types) Experimental
30. [ ` CSP: upgrade-insecure-requests ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/upgrade-insecure-requests)
... | |
Mmdn_HTTP/Permissions_Policy_directives_8_7.txt | sions-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/Permi... | |
Mmdn_HTTP/CSP_directives_25_10.txt | expressions
The ` 'unsafe-eval' ` source expression controls several script execution
methods that create code from strings. If a page has a CSP header and `
'unsafe-eval' ` isn't specified with the ` script-src ` directive, the
following methods are blocked and won't have any effect:
* [ ` eval() ` ](/en-US/docs/... | |
Mmdn_HTTP/Permissions_Policy_directives_32_2.txt | [ ` Content-Security-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) Experime... | |
Mmdn_HTTP/Permissions_Policy_directives_32_8.txt | en-
US/docs/Web/API/Document/browsingTopics) method or send a request with a [ `
Sec-Browsing-Topics ` ](/en-US/docs/Web/HTTP/Headers/Sec-Browsing-Topics)
header will fail with a ` NotAllowedError ` [ ` DOMException ` ](/en-
US/docs/Web/API/DOMException) .
## Syntax
http
Permissions-Policy: browsing-t... | |
Mmdn_HTTP/HTTP_response_status_36_4.txt | /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-Contro... | |
Mmdn_HTTP/CSP_directives_3_4.txt | nticate ` ](/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/HTTP/Headers... | |
Mmdn_HTTP/HTTP_response_status_4_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/Permissions_Policy_directives_7_1.txt | y (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/Headers/X-Frame-Options)
5. [ X-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
6. [ Mozilla w... | |
Mmdn_HTTP/CSP_directives_9_7.txt | eaders/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-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Polic... | |
Mmdn_HTTP/Permissions_Policy_directives_16_0.txt | * Skip to main content
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[ MDN Web Docs ](/en-US/) Open main menu
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* [ 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_request_methods_0_7.txt | erimental
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:... | |
Mmdn_HTTP/CSP_directives_5_8.txt | for the ` font-src ` policy:
http
Content-Security-Policy: font-src <source>;
Content-Security-Policy: font-src <source> <source>;
### Sources
` <source> ` can be any one of the values listed in [ CSP Source Values ](/en-
US/docs/Web/HTTP/Headers/Content-Security-Policy/Sources#sources) .
N... | |
Mmdn_HTTP/CSP_directives_9_5.txt | 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 ` ](/en-US/docs/W... | |
Mmdn_HTTP/CSP_directives_19_9.txt | C%2Fdetails%3E
"This will take you to GitHub to file a new issue.")
[ MDN logo ](/)
Your blueprint for a better internet.
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Mmdn_HTTP/HTTP_response_status_39_6.txt | cs/Web/HTTP/Headers/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/HTT... | |
Mmdn_HTTP/Header_Field_Definitions_55_1.txt | applied MUST be added by an intermediate cache or proxy if
it applies any transformation changing the content-coding (as specified in the
Content-Encoding header) or media-type (as specified in the Content-Type
header) of the response, or the entity-body of the response, unless this
Warning code already appears in the ... | |
Mmdn_HTTP/HTTP_headers_19_4.txt | trol) 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-standard
136. [ ` X-... | |
Mmdn_HTTP/Permissions_Policy_directives_16_9.txt | cy/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 ](https://www.mozilla.org) not-... | |
Mmdn_HTTP/HTTP_response_status_9_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/We... | |
Mmdn_HTTP/HTTP_headers_35_9.txt | lla.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_response_status_13_1.txt | [ 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-Content-Type-Options ](/en-US/docs/We... | |
Mmdn_HTTP/CSP_directives_3_7.txt | sions-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-while-out-of-viewport ](/en-US/docs/Web/HTTP/Headers/Permissions-Policy/execution-w... | |
Mmdn_HTTP/CSP_directives_23_5.txt | est ` ](/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 ` ](/en-US/docs/Web/HTTP/Status/425)
46. [ ... | |
Mmdn_HTTP/HTTP_response_status_34_8.txt | cookies.
Servers will often produce this status if:
* The [ ` Referer ` ](/en-US/docs/Web/HTTP/Headers/Referer) URL is too long
* There are too many [ Cookies ](/en-US/docs/Web/HTTP/Cookies) sent in the request
## Status
http
431 Request Header Fields Too Large
## Specifications
Speci... | |
Mmdn_HTTP/HTTP_response_status_30_9.txt | r use in new websites.
*[
Experimental
]: Experimental. Expect behavior to change in the future.
| |
Mmdn_HTTP/HTTP_response_status_51_0.txt | * Skip to main content
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Mmdn_HTTP/HTTP_response_status_21_8.txt | e
](https://github.com/mdn/content/blob/main/CONTRIBUTING.md "This will take you
to our contribution guidelines on GitHub.") .
This page was last modified on Apr 10, 2023 by [ MDN contributors ](/en-
US/docs/Web/HTTP/Status/506/contributors.txt) .
[ View this page on GitHub
](https://github.com/mdn/content/blob/ma... | |
Mmdn_HTTP/Permissions_Policy_directives_30_7.txt | ions-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
13. [ Permissions-Pol... | |
Mmdn_HTTP/HTTP_response_status_36_1.txt | 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-Conten... | |
Mmdn_HTTP/CSP_directives_2_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_44_5.txt | teapot ` ](/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/42... | |
Mmdn_HTTP/HTTP_headers_30_2.txt | P/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/Web/HTTP/Headers/Content-Type)
37. [ `... | |
Mmdn_HTTP/Permissions_Policy_directives_26_2.txt | rity-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/HTTP_headers_24_8.txt |
The browser will subsequently use those topics to calculate top topics for the
current user for future epochs.
See [ Using the Topics API ](/en-US/docs/Web/API/Topics_API/Using) for more
details.
Header type | [ Response header ](/en-US/docs/Glossary/Response_header)
---|---
[ Forbidden header name ](/en-US/do... | |
Mmdn_HTTP/HTTP_response_status_56_8.txt | n GitHub.") .
This page was last modified on Apr 10, 2023 by [ MDN contributors ](/en-
US/docs/Web/HTTP/Status/510/contributors.txt) .
[ View this page on GitHub
](https://github.com/mdn/content/blob/main/files/en-
us/web/http/status/510/index.md?plain=1 "Folder: en-us/web/http/status/510
\(Opens in a new tab\)") ... | |
Mmdn_HTTP/Permissions_Policy_directives_6_5.txt | ency ` ](/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/Status/429)... | |
Mmdn_HTTP/HTTP_response_status_13_2.txt | 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 ` ](/en-US/docs/Web/HTTP/Headers/Co... | |
Mmdn_HTTP/HTTP_response_status_59_6.txt | lem ` ](/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 ` ](/en-US... | |
Mmdn_HTTP/CSP_directives_29_9.txt | %3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fblob%2Fmain%2Ffiles%2Fen-
us%2Fweb%2Fhttp%2Fheaders%2Fcontent-security-policy%2Ftrusted-
types%2Findex.md%0A*+Last+commit%3A+https%3A%2F%2Fgithub.com%2Fmdn%2Fcontent%2Fcommit%2F835d6632d59993861a0458510402787f8a2c3cb3%0A*+Document+last+modified%3A+2023-10-25T17%3A27%3A32.0... | |
Mmdn_HTTP/Permissions_Policy_directives_21_9.txt | ](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
contributors. Content availabl... | |
Mmdn_HTTP/HTTP_headers_37_0.txt | * Skip to main content
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* References [ References ](/en-US/docs/Web)
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Mmdn_HTTP/HTTP_response_status_10_5.txt | 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 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... | |
Mmdn_HTTP/CSP_directives_18_8.txt | ardized features
(such as the security attributes ` sandbox ` or ` allow ` for ` <iframe> ` ).
Therefore it is [ recommended ](https://csp.withgoogle.com/docs/strict-
csp.html) to restrict this fetch-directive (e.g. explicitly set ` object-src
'none' ` if possible).
CSP version | 1
---|---
Directive type | [ ... | |
Mmdn_HTTP/HTTP_headers_31_8.txt | [ XSS ](/en-US/docs/Glossary/Cross-
site_scripting) ) attacks. These protections are largely unnecessary in modern
browsers when sites implement a strong [ ` Content-Security-Policy ` ](/en-
US/docs/Web/HTTP/Headers/Content-Security-Policy) that disables the use of
inline JavaScript ( ` 'unsafe-inline' ` ).
**Warning:... | |
Mmdn_HTTP/HTTP_headers_2_2.txt | ent-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/Web/HTTP/... | |
Mmdn_HTTP/HTTP_request_methods_1_1.txt | ocol 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/HTTP... | |
Mmdn_HTTP/HTTP_request_methods_2_8.txt | e of 0 in the request.
Note that the client must not send content in the request, or generate fields
that might include sensitive data, such as stored user credentials or cookies.
Request has body | No
---|---
Successful response has body | Yes
[ Safe ](/en-US/docs/Glossary/Safe/HTTP) | Yes
[ Idempote... | |
Mmdn_HTTP/HTTP_response_status_19_1.txt | /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/Headers/X-Frame-Options)
5. [ X-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
6. [ Mozilla web security guide... | |
Mmdn_HTTP/CSP_directives_26_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_19_3.txt | ` ](/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-Transparency) Exper... | |
Mmdn_HTTP/HTTP_response_status_55_0.txt | * Skip to main content
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Mmdn_HTTP/List_of_HTTP_header_fields_10_1.txt | tml#limitrequestfieldsize) on May 9, 2012 . Retrieved March 13, 2012 .
11. ^ _**a** _ _**b** _ _**c** _ [ _RFC 3229_ ](https://datatracker.ietf.org/doc/html/rfc3229) . [ doi ](/wiki/Doi_\(identifier\) "Doi \(identifier\)") : [ 10.17487/RFC3229 ](https://doi.org/10.17487%2FRFC3229) .
12. ^ _**a** _ _**b** _... | |
Mmdn_HTTP/CSP_directives_16_5.txt | ](/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 Unprocessable Content ` ](/en-US/docs/Web/HTTP/Status/422)
43. [ ` 423 Locked ` ](/en-US/docs/Web/HTTP/Status/423)
44. [ `... | |
Mmdn_HTTP/CSP_directives_4_9.txt | ` or ` allow-top-navigation
` keyword.
## Examples
http
Content-Security-Policy: sandbox allow-scripts;
## Specifications
Specification
---
[ Content Security Policy Level 3
# directive-sandbox ](https://w3c.github.io/webappsec-csp/#directive-
sandbox)
## Browser compatibility
B... | |
Mmdn_HTTP/HTTP_response_status_44_9.txt | le under [ a Creative Commons license ](/en-
US/docs/MDN/Writing_guidelines/Attrib_copyright_license) .
*[
Non-standard
]: Non-standard. Check cross-browser support before using.
*[
Deprecated
... | |
Mmdn_HTTP/List_of_HTTP_header_fields_1_1.txt | tle=List_of_HTTP_header_fields&oldid=1219780213 "Permanent link to this revision of this page")
* [ Page information ](/w/index.php?title=List_of_HTTP_header_fields&action=info "More information about this page")
* [ Cite this page ](/w/index.php?title=Special:CiteThisPage&page=List_of_HTTP_header_fields&id=12197... | |
Mmdn_HTTP/Permissions_Policy_directives_15_9.txt | /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 ](https://www.mozilla.org) not-fo... | |
Mmdn_HTTP/HTTP_response_status_40_0.txt | * Skip to main content
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* References [ References ](/en-US/docs/Web)
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* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_response_status_11_2.txt | s/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 ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Policy-Report-Onl... | |
Mmdn_HTTP/HTTP_response_status_1_3.txt | . [ ` 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) Experime... | |
Mmdn_HTTP/HTTP_headers_35_8.txt | Forbidden header name ](/en-US/docs/Glossary/Forbidden_header_name) | yes
## Syntax
http
Access-Control-Request-Method: <method>
## Directives
<method>
One of the [ HTTP request methods ](/en-US/docs/Web/HTTP/Methods) , for
example [ ` GET ` ](/en-US/docs/Web/HTTP/Methods/GET) , [... | |
Mmdn_HTTP/HTTP_response_status_3_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/We... | |
Mmdn_HTTP/CSP_directives_13_6.txt | urity-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-Security-Poli... | |
Mmdn_HTTP/HTTP_headers_27_5.txt | 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/Status/429)
49. [ ` 431 Request Header Fields Too Large ` ](/en-US/docs/Web/HTTP/Status/431)
50. [ ` 451 Unavailable For Legal Reasons ` ](/en-US/doc... | |
Mmdn_HTTP/HTTP_headers_24_5.txt | 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/Status/429)
49. [ ` 431 Request Header Fields Too Large ` ](/en-US/docs/Web/HTTP/Status/431)
50. [ ` 451 Unavailable For Le... | |
Mmdn_HTTP/HTTP_response_status_17_4.txt | h) 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
133. [... | |
Mmdn_HTTP/HTTP_response_status_45_2.txt | th ` ](/en-US/docs/Web/HTTP/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-... | |
Mmdn_HTTP/HTTP_response_status_39_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-CH... | |
Mmdn_HTTP/CSP_directives_28_8.txt | anifest-src <source>;
Content-Security-Policy: manifest-src <source> <source>;
### Sources
` <source> ` can be any one of the values listed in [ CSP Source Values ](/en-
US/docs/Web/HTTP/Headers/Content-Security-Policy/Sources#sources) .
Note that this same set of values can be used in all [ fetch directiv... | |
Mmdn_HTTP/Permissions_Policy_directives_1_1.txt | 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/Headers/X-Frame-Options)
5. [ X-XS... | |
Mmdn_HTTP/HTTP_request_methods_5_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-wh... | |
Mmdn_HTTP/HTTP_response_status_53_6.txt | P/Headers/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/... | |
Mmdn_HTTP/Permissions_Policy_directives_5_3.txt | s/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-Transparency) Experimental
89... | |
Mmdn_HTTP/Permissions_Policy_directives_4_6.txt | 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/trusted-typ... | |
Mmdn_HTTP/HTTP_response_status_18_6.txt | 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/style-src-elem)
29. [ ` CSP: t... | |
Mmdn_HTTP/Permissions_Policy_directives_3_1.txt | ct-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/Headers/X-Frame-Options)
5. [ X-XSS-Protection ](/en-US/docs/Web/HTTP/Headers/X-XSS-Protection)
6. [ Mozilla web security guidelines ](https://wiki.mozill... | |
Mmdn_HTTP/Permissions_Policy_directives_13_8.txt | cript/Reference/Global_Objects/Promise) that rejects with a [
` TypeError ` ](/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError)
.
**Note:** If both this directive (i.e. via the ` allow ` attribute) and the `
allowfullscreen ` attribute are present on an ` <iframe> ` element, this
directive takes precedenc... | |
Mmdn_HTTP/Permissions_Policy_directives_35_4.txt | ders/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-st... | |
Mmdn_HTTP/CSP_directives_25_0.txt | * Skip to main content
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* [ HTML Structure of content on the web ](/en-US/do... | |
Mmdn_HTTP/HTTP_headers_23_6.txt | tent-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/trusted-types) Experimental
30. [ ` CSP: upgrade-insecure-requests ` ](/en-US/docs/We... | |
Mmdn_HTTP/List_of_HTTP_header_fields_6_1.txt | the request body. | ` Content-MD5: Q2hlY2sgSW50ZWdyaXR5IQ== ` | Obsolete [15] | [ RFC ](/wiki/RFC_\(identifier\) "RFC \(identifier\)") [ 1544 ](https://datatracker.ietf.org/doc/html/rfc1544) , [ 1864 ](https://datatracker.ietf.org/doc/html/rfc1864) , [ 4021 ](https://datatracker.ietf.org/doc/html/rfc4021)
Cont... | |
Mmdn_HTTP/HTTP_response_status_27_3.txt | ata ` ](/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) Experimental
87. [ ` Sec-CH-Prefers-R... | |
Mmdn_HTTP/CSP_directives_6_2.txt | /HTTP/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... | |
Mmdn_HTTP/CSP_directives_5_0.txt | * Skip to main content
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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/CSP_directives_25_7.txt | ermissions-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-while-out-o... | |
Mmdn_HTTP/HTTP_headers_2_7.txt | ntal
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/CSP_directives_4_10.txt | dard. Check cross-browser support before using.
*[
Deprecated
]: Deprecated. Not for use in new websites.
*[
Experimental
]: Experimental. Expect behavior to change in the future.
*[... | |
Mmdn_HTTP/Permissions_Policy_directives_2_8.txt | t, the Geolocation API can be used within top-level documents and
their same-origin child frames. This directive allows or prevents cross-origin
frames from accessing geolocation. This includes same-origin frames.
## Syntax
http
Permissions-Policy: geolocation=<allowlist>;
` <allowlist> `
... | |
Mmdn_HTTP/Header_Field_Definitions_13_1.txt | stale directive (which has a similar effect), the protocol also includes a mechanism for the origin server to require revalidation of a cache entry on any subsequent use. When the must-revalidate directive is present in a response received by a cache, that cache MUST NOT use the entry after it becomes stale to respond ... | |
Mmdn_HTTP/Permissions_Policy_directives_13_9.txt | ub.com/mdn/)
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## MDN
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## Support
* [ Product help ](https://support.mozilla.org/product... | |
Mmdn_HTTP/HTTP_response_status_52_5.txt | ` 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 ` ](/en-US/docs/Web/H... | |
Mmdn_HTTP/Permissions_Policy_directives_17_1.txt | 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/Headers/X-Fra... | |
Mmdn_HTTP/HTTP_response_status_56_4.txt | tch-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-Proto ` ](/en-US/docs/We... | |
Mmdn_HTTP/HTTP_request_methods_3_2.txt | nguage)
31. [ ` Content-Length ` ](/en-US/docs/Web/HTTP/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-Secur... | |
Mmdn_HTTP/HTTP_response_status_23_2.txt | ` ](/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 ` ](/en-US/docs/Web/HTTP/Headers/Content-Security-Po... |
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