Now Stable

"New on the Web": For a given set of browsers, what APIs became stable and when, ordered reverse chronologically.

It's a great source of information for posts like this

Example Comparisons
Browsers
Features

Stable APIs

Below is a list of features that are in Firefox and Safari, ordered reverse chronologically by when they became stable (i.e, available in the last browser).

2026/2

API First Browser Date Last Browser Date Days Notes
http.headers.Accept-Encoding.zstd 📋Firefox5/14/2024 Safari2/11/2026638
Safari: Before macOS 26.3 Tahoe, this header value is not sent.
http.headers.Content-Encoding.zstd 📋Firefox5/14/2024 Safari2/11/2026638
Safari: Before macOS 26.3 Tahoe, Safari cannot decode Zstandard responses.

2025/12

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.style-src-elem 📋Firefox12/13/2022 Safari12/12/20251095
Safari: The style-src-elem directive was parsed, but had no effect. See bug 276931.Safari on iOS: The style-src-elem directive was parsed, but had no effect. See bug 276931.WebView on iOS: The style-src-elem directive was parsed, but had no effect. See bug 276931.
http.headers.Set-Cookie.Partitioned 📋Firefox7/22/2025 Safari12/12/2025143

2025/4

API First Browser Date Last Browser Date Days Notes
http.headers.Clear-Site-Data.cache 📋Safari9/18/2023 Firefox4/29/2025589
Chrome: Setting this value may increase response duration (see bug 40233601.Chrome: Setting this value may prevent a page from fully load (see bug 41343050.Chrome Android: Setting this value may increase response duration (see bug 40233601.Chrome Android: Setting this value may prevent a page from fully load (see bug 41343050.Edge: Setting this value may increase response duration (see bug 40233601.Quest Browser: Setting this value may increase response duration (see bug 40233601.Opera: Setting this value may increase response duration (see bug 40233601.Opera: Setting this value may prevent a page from fully load (see bug 41343050.Opera Android: Setting this value may increase response duration (see bug 40233601.Opera Android: Setting this value may prevent a page from fully load (see bug 41343050.Samsung Internet: Setting this value may increase response duration (see bug 40233601.WebView Android: Setting this value may increase response duration (see bug 40233601.WebView Android: Setting this value may prevent a page from fully load (see bug 41343050.

2024/10

API First Browser Date Last Browser Date Days Notes
http.headers.Link.fetchpriority 📋Safari12/11/2023 Firefox10/29/2024323

2024/9

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.report-to 📋Safari3/27/2023 Firefox9/3/2024526
http.headers.Reporting-Endpoints 📋Safari3/27/2023 Firefox9/3/2024526

2023/11

API First Browser Date Last Browser Date Days Notes
http.headers.Link 📋Safari9/18/2023 Firefox11/21/202364
http.status.103 📋Safari9/18/2023 Firefox11/21/202364
Chrome: Supported in HTTP/2 and later only.Chrome Android: Supported in HTTP/2 and later only.Edge: Supported in HTTP/2 and later only.Quest Browser: Supported in HTTP/2 and later only.Opera: Supported in HTTP/2 and later only.Opera Android: Supported in HTTP/2 and later only.Safari: Supported in HTTP/2 and later only.Safari on iOS: Supported in HTTP/2 and later only.Samsung Internet: Supported in HTTP/2 and later only.WebView Android: Supported in HTTP/2 and later only.WebView on iOS: Supported in HTTP/2 and later only.
http.status.103.preconnect Safari9/18/2023 Firefox11/21/202364

2023/9

API First Browser Date Last Browser Date Days Notes
http.headers.Alt-Svc 📋Firefox5/12/2015 Safari9/18/20233051
Firefox: Only supports draft-04Firefox for Android: Only supports draft-04
http.headers.Clear-Site-Data 📋Firefox10/23/2018 Safari9/18/20231791
http.headers.Clear-Site-Data.cookies 📋Firefox10/23/2018 Safari9/18/20231791
http.headers.Clear-Site-Data.secure_context_required Firefox10/23/2018 Safari9/18/20231791
http.headers.Clear-Site-Data.storage 📋Firefox10/23/2018 Safari9/18/20231791
http.headers.Clear-Site-Data.wildcard 📋Firefox10/23/2018 Safari9/18/20231791

2023/8

API First Browser Date Last Browser Date Days Notes
http.headers.Range.cors_safe Safari9/12/2022 Firefox8/29/2023351
http.headers.Content-Security-Policy.script-src.external_scripts 📋Safari7/20/2022 Firefox8/1/2023377

2023/3

API First Browser Date Last Browser Date Days Notes
http.headers.Sec-Fetch-Dest 📋Firefox7/13/2021 Safari3/27/2023622
http.headers.Sec-Fetch-Mode 📋Firefox7/13/2021 Safari3/27/2023622
http.headers.Sec-Fetch-Site 📋Firefox7/13/2021 Safari3/27/2023622
http.headers.Server-Timing 📋Firefox6/26/2018 Safari3/27/20231735
http.headers.Authorization.authorization_removed_cross_origin 📋Safari10/24/2022 Firefox3/14/2023141

2023/1

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.unsafe-hashes Safari3/14/2022 Firefox1/17/2023309

2022/12

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.script-src-attr 📋Safari3/14/2022 Firefox12/13/2022274
http.headers.Content-Security-Policy.script-src-elem 📋Safari3/14/2022 Firefox12/13/2022274
http.headers.Content-Security-Policy.style-src-attr 📋Safari3/14/2022 Firefox12/13/2022274

2022/9

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.script-src.wasm-unsafe-eval Firefox6/28/2022 Safari9/12/202276

2022/5

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.worker-src 📋Firefox1/23/2018 Safari5/16/20221574
Chrome: Chrome 59 and higher skips the deprecated child-src directive.Chrome Android: Chrome Android 59 and higher skips the deprecated child-src directive.Quest Browser: Quest Browser 5.0 and higher skips the deprecated child-src directive.Opera: Opera 46 and higher skips the deprecated child-src directive.Opera Android: Opera Android 43 and higher skips the deprecated child-src directive.WebView Android: WebView Android 59 and higher skips the deprecated child-src directive.

2022/3

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.report-sample Firefox10/23/2018 Safari3/14/20221238
http.headers.Content-Security-Policy.strict-dynamic Firefox3/7/2017 Safari3/14/20221833

2021/12

API First Browser Date Last Browser Date Days Notes
http.headers.Cross-Origin-Embedder-Policy 📋Firefox7/28/2020 Safari12/13/2021503
http.headers.Cross-Origin-Opener-Policy 📋Firefox7/28/2020 Safari12/13/2021503

2021/9

API First Browser Date Last Browser Date Days Notes
http.headers.Referrer-Policy.default_strict-origin-when-cross-origin Firefox3/23/2021 Safari9/20/2021181

2021/3

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Length.cors_response_safelist Safari3/25/2019 Firefox3/23/2021729

2020/9

API First Browser Date Last Browser Date Days Notes
http.data-url.top_level_navigation_blocked Firefox3/13/2018 Safari9/16/2020918
http.headers.Cache-Control.stale-while-revalidate 📋Firefox7/9/2019 Safari9/16/2020435
http.headers.Referer.length_limit_4096B Firefox10/22/2019 Safari9/16/2020330

2020/3

API First Browser Date Last Browser Date Days Notes
http.headers.Cross-Origin-Resource-Policy 📋Safari9/17/2018 Firefox3/10/2020540
Chrome: Until version 75, downloads for files with this header would fail in Chrome. See bug 41452948.Chrome: From version 80 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 86, partial PDF loading is disabled.Chrome Android: Until version 75, downloads for files with this header would fail in Chrome Android. See bug 41452948.Chrome Android: From version 80 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 86, partial PDF loading is disabled.Quest Browser: Until version 7.0, downloads for files with this header would fail in Quest Browser. See bug 41452948.Quest Browser: From version 9.0 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 12.0, partial PDF loading is disabled.Opera: Until version 62, downloads for files with this header would fail in Opera. See bug 41452948.Opera: From version 67 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 72, partial PDF loading is disabled.Opera Android: Until version 54, downloads for files with this header would fail in Opera Android. See bug 41452948.Opera Android: From version 57 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 61, partial PDF loading is disabled.WebView Android: Until version 75, downloads for files with this header would fail in WebView Android. See bug 41452948.WebView Android: From version 80 to 85, linearized PDFs served inline with this header fail to render properly. See bug 40127935. From version 86, partial PDF loading is disabled.

2019/10

API First Browser Date Last Browser Date Days Notes
http.headers.Origin 📋Safari6/23/2003 Firefox10/22/20195965
Edge: Not sent with POST requestsFirefox: Not sent with POST requests, see bug 446344.Firefox for Android: Not sent with POST requests, see bug 446344.

2019/9

API First Browser Date Last Browser Date Days Notes
http.headers.Access-Control-Allow-Headers.wildcard Firefox9/3/2019 Safari9/19/201916
http.headers.Access-Control-Allow-Methods.wildcard Firefox9/3/2019 Safari9/19/201916
http.headers.Access-Control-Expose-Headers.wildcard Firefox9/3/2019 Safari9/19/201916
http.headers.Set-Cookie.SameSite 📋Firefox5/9/2018 Safari9/19/2019498
Safari: Safari 13 on macOS 10.14 (Mojave), treats SameSite=None and invalid values as Strict. This is fixed in version 10.15 (Catalina) and later.Safari: Treats SameSite=None and invalid values as Strict in macOS before 10.15 Catalina. See bug 198181.Safari on iOS: Treats SameSite=None and invalid values as Strict in iOS before 13. See bug 198181.WebView on iOS: Treats SameSite=None and invalid values as Strict in iOS before 13. See bug 198181.
http.headers.Set-Cookie.SameSite.None Firefox5/9/2018 Safari9/19/2019498
Chrome: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Chrome Android: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Quest Browser: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Opera: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Opera Android: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.Safari: Not supported before macOS version 10.15 (Catalina).Samsung Internet: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.WebView Android: Rejects cookies with SameSite=None. See SameSite=None: Known Incompatible Clients.
http.headers.Set-Cookie.host_secure_prefixes Firefox11/15/2016 Safari9/19/20191038

2018/9

API First Browser Date Last Browser Date Days Notes
http.headers.Set-Cookie.SameSite.Lax Firefox5/9/2018 Safari9/17/2018131
http.headers.Set-Cookie.SameSite.Strict Firefox5/9/2018 Safari9/17/2018131

2018/4

API First Browser Date Last Browser Date Days Notes
http.headers.Referrer-Policy 📋Firefox11/15/2016 Safari4/12/2018513
http.headers.Referrer-Policy.same-origin Firefox3/7/2017 Safari4/12/2018401
http.headers.Referrer-Policy.strict-origin Firefox3/7/2017 Safari4/12/2018401
http.headers.Referrer-Policy.strict-origin-when-cross-origin Firefox3/7/2017 Safari4/12/2018401
http.headers.Service-Worker 📋Firefox1/26/2016 Safari4/12/2018807
http.headers.Service-Worker-Allowed 📋Firefox8/11/2015 Safari4/12/2018975

2018/1

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.frame-ancestors 📋Safari9/20/2016 Firefox1/23/2018490
Firefox: Before Firefox 58, frame-ancestors is ignored in Content-Security-Policy-Report-Only.Firefox for Android: Before Firefox for Android 58, frame-ancestors is ignored in Content-Security-Policy-Report-Only.

2017/9

API First Browser Date Last Browser Date Days Notes
http.headers.Accept-Encoding.br 📋Firefox1/26/2016 Safari9/19/2017602
Safari: Unsupported before macOS 10.13 High Sierra.
http.headers.Cache-Control.immutable Firefox9/20/2016 Safari9/19/2017364
http.headers.Content-Encoding.br 📋Firefox1/26/2016 Safari9/19/2017602
Safari: Unsupported before macOS 10.13 High Sierra.
http.headers.Content-Security-Policy.manifest-src 📋Firefox9/22/2015 Safari9/19/2017728
http.headers.Timing-Allow-Origin 📋Firefox3/8/2016 Safari9/19/2017560
http.headers.X-Content-Type-Options 📋Firefox11/15/2016 Safari9/19/2017308
Chrome: Not supported for stylesheets.Chrome Android: Not supported for stylesheets.Opera: Not supported for stylesheets.Opera Android: Not supported for stylesheets.Samsung Internet: Not supported for stylesheets.WebView Android: Not supported for stylesheets.

2017/8

API First Browser Date Last Browser Date Days Notes
http.headers.SourceMap 📋Safari10/22/2013 Firefox8/8/20171386
Chrome: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Chrome Android: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Edge: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Quest Browser: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Opera: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Opera Android: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.Samsung Internet: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.WebView Android: Not supported for ECMAScript Modules (<script type="module">). See bug 40854862.

2017/3

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.upgrade-insecure-requests 📋Firefox11/3/2015 Safari3/27/2017510
http.headers.Upgrade-Insecure-Requests 📋Firefox8/2/2016 Safari3/27/2017237

2016/11

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.connect-src 📋Safari10/22/2013 Firefox11/15/20161120
Firefox: Before Firefox 50, ping attributes of <a> elements weren't covered by connect-src.
http.headers.Content-Security-Policy.sandbox 📋Safari10/22/2013 Firefox11/15/20161120
http.headers.Content-Security-Policy.worker_support Safari9/20/2016 Firefox11/15/201656

2016/9

API First Browser Date Last Browser Date Days Notes
http.headers.Content-Security-Policy.base-uri 📋Firefox1/13/2015 Safari9/20/2016616
http.headers.Content-Security-Policy.child-src 📋Firefox3/8/2016 Safari9/20/2016196
http.headers.Content-Security-Policy.form-action 📋Firefox2/24/2015 Safari9/20/2016574

2016/3

API First Browser Date Last Browser Date Days Notes
http.mixed-content 📋Firefox8/6/2013 Safari3/21/2016958
http.mixed-content.blockable_mixed_content 📋Firefox8/6/2013 Safari3/21/2016958
Chrome: From version 79 blocks iframes, scripts, and stylesheets.Chrome Android: From version 79 blocks iframes, scripts, and stylesheets.Edge: From version 79 blocks iframes, scripts, and stylesheets.Quest Browser: From version 8.0 blocks iframes, scripts, and stylesheets.Opera: From version 66 blocks iframes, scripts, and stylesheets.Opera Android: From version 57 blocks iframes, scripts, and stylesheets.Samsung Internet: From version 12.0 blocks iframes, scripts, and stylesheets.WebView Android: From version 79 blocks iframes, scripts, and stylesheets.
http.headers.Content-Security-Policy.meta-element-support Safari10/22/2013 Firefox3/8/2016868

2013/10

API First Browser Date Last Browser Date Days Notes
http.headers.Authorization.NTLM Firefox11/9/2004 Safari10/22/20133269
http.headers.Authorization.Negotiate 📋Firefox11/9/2004 Safari10/22/20133269
http.headers.Content-Security-Policy 📋Firefox8/6/2013 Safari10/22/201377
Internet Explorer: Only supporting 'sandbox' directive.
http.headers.Content-Security-Policy.default-src 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy.font-src 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy.frame-src 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy.img-src 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy.media-src 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy.object-src 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy.report-uri 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy.script-src 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy.style-src 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Content-Security-Policy-Report-Only 📋Firefox8/6/2013 Safari10/22/201377
http.headers.Strict-Transport-Security 📋Firefox3/22/2011 Safari10/22/2013945
http.headers.WWW-Authenticate.NTLM Firefox11/9/2004 Safari10/22/20133269
http.headers.WWW-Authenticate.Negotiate 📋Firefox11/9/2004 Safari10/22/20133269
http.status.308 📋Firefox7/17/2012 Safari10/22/2013462
Internet Explorer: Does not work below Windows 10.

2012/7

API First Browser Date Last Browser Date Days Notes
http.headers.Sec-WebSocket-Accept 📋Firefox3/13/2012 Safari7/25/2012134
http.headers.Sec-WebSocket-Extensions 📋Firefox3/13/2012 Safari7/25/2012134
http.headers.Sec-WebSocket-Key 📋Firefox3/13/2012 Safari7/25/2012134
http.headers.Sec-WebSocket-Protocol 📋Firefox3/13/2012 Safari7/25/2012134
http.headers.Sec-WebSocket-Version 📋Firefox3/13/2012 Safari7/25/2012134

2011/8

API First Browser Date Last Browser Date Days Notes
http.headers.Upgrade 📋Safari6/7/2010 Firefox8/16/2011435

2011/3

API First Browser Date Last Browser Date Days Notes
http.headers.X-Frame-Options 📋Safari6/8/2009 Firefox3/22/2011652
http.headers.X-Frame-Options.SAMEORIGIN Safari6/8/2009 Firefox3/22/2011652
Chrome: Starting in Chrome 61, this applies to all of a frame's ancestors.Chrome Android: Starting in Chrome Android 61, this applies to all of a frame's ancestors.Firefox: Starting in Firefox 59, this applies to all of a frame's ancestors.Firefox for Android: Starting in Firefox for Android 59, this applies to all of a frame's ancestors.Quest Browser: Starting in Quest Browser 5.0, this applies to all of a frame's ancestors.Opera: Starting in Opera 48, this applies to all of a frame's ancestors.Opera Android: Starting in Opera Android 45, this applies to all of a frame's ancestors.Samsung Internet: Starting in Samsung Internet 8.0, this applies to all of a frame's ancestors.WebView Android: Starting in WebView Android 61, this applies to all of a frame's ancestors.

2010/6

API First Browser Date Last Browser Date Days Notes
http.headers.Set-Cookie.HttpOnly Firefox6/17/2008 Safari6/7/2010720

2009/6

API First Browser Date Last Browser Date Days Notes
http.headers.Access-Control-Allow-Credentials 📋Safari6/8/2009 Firefox6/30/200922
http.headers.Access-Control-Allow-Headers 📋Safari6/8/2009 Firefox6/30/200922
http.headers.Access-Control-Allow-Methods 📋Safari6/8/2009 Firefox6/30/200922
http.headers.Access-Control-Allow-Origin 📋Safari6/8/2009 Firefox6/30/200922
http.headers.Access-Control-Expose-Headers 📋Safari6/8/2009 Firefox6/30/200922
http.headers.Access-Control-Max-Age 📋Safari6/8/2009 Firefox6/30/200922
http.headers.Access-Control-Request-Headers 📋Safari6/8/2009 Firefox6/30/200922
http.headers.Access-Control-Request-Method 📋Safari6/8/2009 Firefox6/30/200922

2008/3

API First Browser Date Last Browser Date Days Notes
http.data-url 📋Firefox10/24/2006 Safari3/18/2008511
Edge: Before Edge 79, the maximum size supported is 4GB.Internet Explorer: Since Internet Explorer 9, the maximum size supported is 4GB.Internet Explorer: In Internet Explorer 8, the maximum size supported is 32kB.
http.data-url.css_files Firefox10/24/2006 Safari3/18/2008511
http.data-url.html_files Firefox10/24/2006 Safari3/18/2008511
http.data-url.js_files Firefox10/24/2006 Safari3/18/2008511

2004/11

API First Browser Date Last Browser Date Days Notes
http.headers.Accept 📋Safari6/23/2003 Firefox11/9/2004505
Firefox: In Firefox 66, the default Accept header value changed to */*.Firefox for Android: In Firefox for Android 66, the default Accept header value changed to */*.
http.headers.Accept-Encoding 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Accept-Language 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Accept-Ranges 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Age 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Authorization 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Authorization.Basic 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Authorization.Digest 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Authorization.Digest.md5 Safari6/23/2003 Firefox11/9/2004505
http.headers.Cache-Control 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Connection 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Content-Disposition 📋Safari6/23/2003 Firefox11/9/2004505
Chrome: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Chrome Android: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Firefox: From version 82, if an <a> element's download attribute is set (for a same-origin URL) then the inline directive is ignored. Earlier versions did not match the specification and respected the header directive over the attribute. See bug 1658877.Firefox for Android: From version 82, if an <a> element's download attribute is set (for a same-origin URL) then the inline directive is ignored. Earlier versions did not match the specification and respected the header directive over the attribute. See bug 1658877.Quest Browser: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Opera: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Opera Android: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.Safari: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 18384.Safari on iOS: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 18384.Samsung Internet: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.WebView Android: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 352093465.WebView on iOS: When saving documents, the document title is used instead of the filename parameter if the disposition type is inline. See bug 18384.
http.headers.Content-Encoding 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Content-Language 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Content-Length 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Content-Location 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Content-Range 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Content-Type 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Cookie 📋Safari6/23/2003 Firefox11/9/2004505
Safari: Cookies with Secure flag are not sent to unsecured http://localhost/ endpoints. See bug 281149.Safari on iOS: Cookies with Secure flag are not sent to unsecured http://localhost/ endpoints. See bug 281149.WebView on iOS: Cookies with Secure flag are not sent to unsecured http://localhost/ endpoints. See bug 281149.
http.headers.Date 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.ETag 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Expires 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.From 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Host 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.If-Match 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.If-Modified-Since 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.If-None-Match 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.If-Range 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.If-Unmodified-Since 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Keep-Alive 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Last-Modified 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Location 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Pragma 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Proxy-Authenticate 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Range 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Referer 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Refresh 📋Safari6/23/2003 Firefox11/9/2004505
Firefox: From version 136 the HTTP Referer header is sent following a refresh that redirects to another page (if permitted)Firefox for Android: From version 136 the HTTP Referer header is sent following a refresh that redirects to another page (if permitted)
http.headers.Server 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Set-Cookie 📋Safari6/23/2003 Firefox11/9/2004505
Safari: Cookies with Secure flag are not sent to unsecured http://localhost/ endpoints. See bug 281149.Safari on iOS: Cookies with Secure flag are not sent to unsecured http://localhost/ endpoints. See bug 281149.WebView on iOS: Cookies with Secure flag are not sent to unsecured http://localhost/ endpoints. See bug 281149.
http.headers.Set-Cookie.Max-Age Safari6/23/2003 Firefox11/9/2004505
http.headers.TE 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Transfer-Encoding 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.User-Agent 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Vary 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.Via 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.WWW-Authenticate 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.WWW-Authenticate.Basic 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.WWW-Authenticate.Digest 📋Safari6/23/2003 Firefox11/9/2004505
http.headers.WWW-Authenticate.Digest.md5 Safari6/23/2003 Firefox11/9/2004505
http.headers.Warning 📋Safari6/23/2003 Firefox11/9/2004505
http.methods.CONNECT 📋Safari6/23/2003 Firefox11/9/2004505
http.methods.DELETE 📋Safari6/23/2003 Firefox11/9/2004505
http.methods.GET 📋Safari6/23/2003 Firefox11/9/2004505
http.methods.HEAD 📋Safari6/23/2003 Firefox11/9/2004505
http.methods.OPTIONS 📋Safari6/23/2003 Firefox11/9/2004505
http.methods.POST 📋Safari6/23/2003 Firefox11/9/2004505
http.methods.PUT 📋Safari6/23/2003 Firefox11/9/2004505