{
"specification": [
{
"name": "CSS Grid Layout Level 1",
"status": {
"status": "In Development",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/css-grid/",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=60731",
"keywords": ["css grid layout", "css grid", "grid"],
"category": "css",
"contact": {
"name": "Sergio Villar Senin",
"email": "svillar@igalia.com"
}
},
{
"name": "CSS Image Values and Replaced Content Module Level 4",
"url": "https://www.w3.org/TR/css4-images/",
"keywords": ["css image values","css","image values"],
"category": "css"
},
{
"name": "CSS Inline Layout Module Level 3",
"status": {
"status": "In Development",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/css-inline/",
"keywords": ["css inline layout", "css inline", "inline"],
"category": "css"
},
{
"name": "CSS Media Queries Level 4",
"url": "http://dev.w3.org/csswg/mediaqueries-4/",
"keywords": ["css media queries", "media queries"],
"category": "css"
},
{
"name": "CSS Painting API Level 1",
"status": {
"status": "Under Consideration"
},
"url": "https://drafts.css-houdini.org/css-paint-api/",
"keywords": ["css", "houdini"],
"category": "css"
},
{
"name": "CSS Positioned Layout Module Level 3",
"url": "http://dev.w3.org/csswg/css-position/",
"keywords": ["css positioning"],
"category": "css"
},
{
"name": "CSS Properties and Values API Level 1",
"status": {
"status": "Under Consideration"
},
"url": "https://drafts.css-houdini.org/css-properties-values-api/",
"keywords": ["css", "houdini"],
"category": "css"
},
{
"name": "CSS Scroll Snap Points Module Level 1",
"status": {
"status": "In Development",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/css-snappoints/",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=134283",
"keywords": ["css scroll snap points", "scroll snap", "snap points"],
"category": "css",
"contact": {
"name": "Brent Fulgham",
"email": "bfulgham@apple.com"
}
},
{
"name": "CSS Selectors Level 4",
"url": "http://dev.w3.org/csswg/selectors-4/",
"keywords": ["css selectors", "selectors"],
"category": "css",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "CSS Variables",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://www.w3.org/TR/css-variables/",
"keywords": ["css variable", "css custom property"],
"category": "css",
"description": "Allows developers to define reusable custom property values.",
"contact": {
"name": "Jon Davis",
"twitter": "@jonathandavis",
"email": "web-evangelist@apple.com"
}
},
{
"name": "CSS Will Change",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://drafts.csswg.org/css-will-change/",
"keywords": ["css willchange", "css will-change"],
"category": "css",
"contact": {
"name": "Simon Fraser",
"twitter": "@smfr"
}
},
{
"name": "Content Security Policy Level 2",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://w3c.github.io/webappsec-csp/2/",
"keywords": ["csp", "cross-site scripting", "xss", "injection", "header"],
"category": "webapps",
"description": "A mechanism that web applications can use to mitigate content injection vulnerabilities, such as cross-site scripting (XSS). Developers can declare a CSP policy to prohibit their web application from loading content or executing scripts that have not been whitelisted among other capabilities.",
"contact": {
"name": "Daniel Bates",
"email": "dbates@webkit.org"
}
},
{
"name": "Content Security Policy Level 3",
"status": {
"status": "Partial Support",
"enabled-by-default": true
},
"url": "https://w3c.github.io/webappsec-csp/",
"keywords": ["csp", "cross-site scripting", "xss", "injection", "header"],
"category": "webapps",
"contact": {
"name": "Daniel Bates",
"email": "dbates@webkit.org"
}
},
{
"name": "DOM",
"url": "https://dom.spec.whatwg.org",
"keywords": ["dom", "dom4"],
"category": "html"
},
{
"name": "Fetch API",
"status": {
"status": "In Development"
},
"url": "https://fetch.spec.whatwg.org",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=151937",
"keywords": ["fetch", "http", "cors", "request", "response", "header"],
"category": "webapps",
"description": "An underlying unified architecture for making resource requests.",
"contact": {
"name": "Jon Davis",
"twitter": "@jonathandavis",
"email": "web-evangelist@apple.com"
}
},
{
"name": "Filter Effects Module Level 2",
"url": "http://dev.w3.org/fxtf/filters-2/",
"keywords": ["css filters", "filter effects", "filters"],
"category": "css"
},
{
"name": "HTML5",
"url": "https://html.spec.whatwg.org",
"keywords": ["html", "html5", "html5.1"],
"category": "html"
},
{
"name": "IndexedDB",
"status": {
"status": "Done"
},
"url": "http://www.w3.org/TR/IndexedDB/",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=149117",
"keywords": ["indexeddb", "index db", "indexed db", "indexed database", "idb"],
"description": "A standard interface to a browser database of records for simple values and objects. IndexedDB currently matches the W3C recommended spec (version 1). We are participating in development of version 2 of the spec and plan to implement new features as they stabilize.",
"contact": {
"name": "Brady Eidson",
"twitter": "@bradeeoh",
"email": "beidson@webkit.org"
}
},
{
"name": "Resource Timing",
"status": {
"status": "In Development",
"enabled-by-default": false
},
"url": "http://www.w3.org/TR/resource-timing/",
"webkit-url": "https://webkit.org/b/61138",
"keywords": ["resourcetiming","resource timing","rsrc"],
"description": "Provides detailed timing information to JavaScript for sub-resources loaded by the page.",
"contact": {
"name": "Jonathan Davis",
"email": "web-evangelist@apple.com",
"twitter": "@jonathandavis"
}
},
{
"name": "Service Workers",
"status": {
"status": "Under Consideration"
},
"url": "http://www.w3.org/TR/2015/WD-service-workers-20150625/",
"keywords": ["service workers"],
"category": "webapps",
"description": "A method for browsers to run JavaScript in the background to handle network requests and manage cached responses. Service Workers offers a replacement for Application Cache.",
"contact": {
"name": "Jon Davis",
"twitter": "@jonathandavis",
"email": "web-evangelist@apple.com"
}
},
{
"name": "Streams",
"url": "https://streams.spec.whatwg.org",
"keywords": ["streams api"],
"category": "webapps"
},
{
"name": "WOFF File Format 2.0",
"status": {
"status": "Done"
},
"url": "https://www.w3.org/TR/WOFF2/",
"keywords": ["woff"],
"category": "css",
"description": "Improves compression to reduce bandwidth with content-aware preprocessing.",
"contact": {
"name": "Jonathan Davis",
"email": "web-evangelist@apple.com",
"twitter": "@jonathandavis"
}
},
{
"name": "Web Animations",
"status": {
"status": "Under Consideration"
},
"url": "https://www.w3.org/TR/web-animations-1/",
"keywords": ["web animations"],
"description": "An API to synchronize with the timing for presentation changes of a web page.",
"contact": {
"name": "Jonathan Davis",
"email": "web-evangelist@apple.com",
"twitter": "@jonathandavis"
}
},
{
"name": "Web Components",
"url": "http://www.w3.org/wiki/WebComponents/",
"keywords": ["web components", "shadow dom", "html imports", "custom elements", "template element"],
"category": "webapps",
"description": "A collection of technologies to improve modularization of DOM subtrees.",
"contact": {
"name": "Ryosuke Niwa",
"twitter": "@RyosukeNiwa",
"email": "rniwa@webkit.org"
}
},
{
"name": "WebCrypto",
"status": {
"status": "Partial Support",
"enabled-by-default": true
},
"url": "http://www.w3.org/TR/WebCryptoAPI/",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=122679",
"keywords": ["webcrypto"],
"category": "webapps",
"description": "A JavaScript API for web applications to perform cryptographic operations.",
"contact": {
"name": "Jon Davis",
"twitter": "@jonathandavis",
"email": "web-evangelist@apple.com"
}
},
{
"name": "WebGL 1",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://www.khronos.org/registry/webgl/specs/1.0/",
"keywords": ["webgl"],
"category": "html"
},
{
"name": "WebGL 2",
"status": {
"status": "In Development",
"enabled-by-default": true
},
"url": "https://www.khronos.org/registry/webgl/specs/latest/2.0/",
"keywords": ["webgl"],
"category": "html"
},
{
"name": "WebRTC",
"status": {
"status": "In Development"
},
"url": "http://www.w3.org/TR/webrtc/",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=124288",
"keywords": ["webrtc"],
"category": "webapps",
"description": "An API to facilitate real-time communication for browser-to-browser applications.",
"contact": {
"name": "Jon Davis",
"twitter": "@jonathandavis",
"email": "web-evangelist@apple.com"
}
}
],
"features": [
{
"name": "CSS Selector :any-link",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/selectors-4/#the-any-link-pseudo",
"specification": "CSS Selectors Level 4",
"description": "The pseudo class :any-link matches any element that would match :link or :visisted.",
"comment": "A prefix version :-webkit-any-link has been available for a while but it was not 100% compliant to the specification.",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "CSS Selector :focus-within",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://drafts.csswg.org/selectors-4/#the-focus-within-pseudo",
"webkit-url": "https://trac.webkit.org/changeset/202358",
"specification": "CSS Selectors Level 4",
"description": "The selector :focus-within matches an element if the element or a descendant has the focus.",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "CSS Selector :lang() level 4",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/selectors-4/#the-lang-pseudo",
"specification": "CSS Selectors Level 4",
"description": "The selector :lang() is extended in level 4 to support a list of language range, each range can contain a wildcard. For example: p:lang(\"*-be\", \"en\")."
},
{
"name": "CSS Selector :matches()",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/selectors-4/#matches",
"specification": "CSS Selectors Level 4",
"description": "The selector :matches() takes a selector list as argument and matches an element if any of them matches (e.g. :matches(article > section, #target)). When used for styling, the specificity of :matches() is the higest specificity of all selectors in the selector list.",
"comment": "The pseudo classes <em>:visited</em> and <em>:link</em> are not supported inside :matches().",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "CSS Selector :not() level 4",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/selectors-4/#negation",
"specification": "CSS Selectors Level 4",
"description": "The selector :not() in level 4 supports full selector lists as argument. For example: :not(:any-link >> img, :any-link >> picture).",
"comment": "The pseudo classes <em>:visited</em> and <em>:link</em> are not supported inside :not().",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "CSS Selector :nth-child(An+B of selector list) and :nth-last-child(An+B of selector list)",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/selectors-4/#the-nth-child-pseudo",
"specification": "CSS Selectors Level 4",
"description": "The pseudo classes :nth-child() and :nth-last-child() now supports a selector list that filters what to count. For example: \":nth-child(even of .visible)\".",
"comment": "The pseudo classes <em>:visited</em> and <em>:link</em> are not supported inside :nth-child() and :nth-last-child().",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "CSS Selector :placeholder-shown",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/selectors-4/#placeholder",
"specification": "CSS Selectors Level 4",
"description": "The selector :placeholder-shown matches any input element that has a visible placeholder.",
"comment": "Styling the placeholder can be done through the WebKit pseudo-element \"::placeholder\".",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "CSS Shapes Level 1",
"status": {
"status": "In Development",
"enabled-by-default": true
},
"url": "http://www.w3.org/TR/css-shapes-1/",
"description": "CSS Shapes describe geometric shapes for use in CSS. For Level 1, CSS Shapes can be applied to floats.",
"comment": "The implementation is feature complete and shipping, but is -webkit prefixed."
},
{
"name": "Case-insensitive attribute selectors",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/selectors-4/#attribute-case",
"specification": "CSS Selectors Level 4",
"description": "Any attribute selector that test a value can take a flag \"i\" to use case insensitive checks. For example: input[type=number i] test the value \"number\" case-insensitively.",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "Conic Gradients",
"status": {
"status": "Under Consideration"
},
"url": "https://www.w3.org/TR/css4-images/#conic-gradients",
"specification": "CSS Image Values and Replaced Content Module Level 4",
"description": "Defines gradients wrapped around a central point.",
"contact": {
"name": "Jonathan Davis",
"email": "web-evangelist@apple.com",
"twitter": "@jonathandavis"
}
},
{
"name": "Custom Elements",
"status": {
"status": "In Development"
},
"url": "http://w3c.github.io/webcomponents/spec/custom/",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=150225",
"specification": "Web Components",
"description": "Define a custom HTML tag and associate it with an ES6 class.",
"contact": {
"name": "Ryosuke Niwa",
"twitter": "@RyosukeNiwa",
"email": "rniwa@webkit.org"
}
},
{
"name": "Download Attribute",
"status": {
"status": "In Development"
},
"url": "https://html.spec.whatwg.org/multipage/semantics.html#downloading-resources",
"webkit-url": "https://webkit.org/b/102914",
"specification": "HTML5",
"description": "An attribute to an anchor or area element to indicate that a resource is intended to be downloaded for use later rather than immediately.",
"contact": {
"name": "Brent Fulgham",
"email": "bfulgham@apple.com",
"twitter": "@bfulgham"
}
},
{
"name": "Element.closest()",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://dom.spec.whatwg.org/#dom-element-closest",
"documentation-url": "https://developer.mozilla.org/en-US/docs/Web/API/Element/closest",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=137418",
"specification": "DOM",
"description": "Find the closest ancestor matching the selector passed as argument. The element itself is returned if it matches the selector.",
"contact": {
"name": "Benjamin Poulain",
"twitter": "@awfulben",
"email": "benjamin@webkit.org"
}
},
{
"name": "Filter Effects backdrop-filter propery",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/fxtf/filters-2/#propdef-backdrop-filter",
"specification": "Filter Effects Module Level 2",
"description": "This property specifies styling for filters applied to the backdrop of an element."
},
{
"name": "Force Click Events",
"status": {
"status": "Prototyping",
"enabled-by-default": true
},
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=142836",
"description": "Provide the events necessary to handle force click events in the page, overriding the default behavior."
},
{
"name": "HTML imports",
"status": {
"status": "Not Considering"
},
"url": "http://w3c.github.io/webcomponents/spec/imports/",
"specification": "Web Components",
"description": "Includes resusable HTML documents in other HTML documents.",
"comment": "There are concerns about the disconnect between this specification and ES6 Modules. WebKit has no intent to support the current specification.",
"contact": {
"name": "Jon Davis",
"twitter": "@jonathandavis",
"email": "web-evangelist@apple.com"
}
},
{
"name": "ImageBitmap",
"status": {
"status": "Under Consideration"
},
"url": "https://html.spec.whatwg.org/multipage/webappapis.html#imagebitmap",
"webkit-url": "https://webkit.org/b/",
"specification": "HTML5",
"description": "An interface for drawing bitmap images to a <canvas> without undue latency.",
"contact": {
"name": "Jonathan Davis",
"email": "web-evangelist@apple.com",
"twitter": "@jonathandavis"
}
},
{
"name": "Initial Letter",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/css-inline/#propdef-initial-letter",
"specification": "CSS Inline Layout Module Level 3",
"description": "This property specifies styling for dropped, raised, and sunken initial letters."
},
{
"name": "Interaction Media Features (pointer, hover, any-pointer, any-hover)",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/mediaqueries-4/#mf-interaction",
"specification": "CSS Media Queries Level 4",
"description": "The \"pointer\" media defines how percise the pointing device is. The \"hover\" media defines the ability of the poiting device to hover elements."
},
{
"name": "MicroData",
"status": {
"status": "Removed"
},
"url": "https://html.spec.whatwg.org/multipage/microdata.html",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=119480",
"specification": "HTML5",
"comment": "WebKit used to support MicroData. The feature never gained any traction and was eventually removed to clean up the codebase."
},
{
"name": "Navigator.hardwareConcurrency",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://wiki.whatwg.org/wiki/Navigator_HW_Concurrency",
"webkit-url": "http://trac.webkit.org/changeset/169017",
"description": "Navigator.hardwareConcurrency provides the total number of logical processors available to the user agent."
},
{
"name": "Picture element",
"status": {
"status": "Done",
"enabled-by-default": false
},
"url": "https://html.spec.whatwg.org/multipage/embedded-content.html#the-picture-element",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=116963",
"specification": "HTML5",
"description": "Enable handling the art-direction responsive images use-case by defining multiple image sources in markup",
"contact": {
"name": "Yoav Weiss",
"twitter": "@yoavweiss",
"email": "yoav@yoav.ws"
}
},
{
"name": "Position: sticky",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://dev.w3.org/csswg/css-position/#sticky-pos",
"specification": "CSS Positioned Layout Module Level 3",
"description": "Sticky positioning provides a way to position element out of the normal flow when scrolling. Unlike solutions based on JavaScript, the change of position is synchronized with scrolling.",
"comment": "The feature is prefixed with <em>-webkit-</em>. There are some remaining issues to resolve in the specification."
},
{
"name": "Readable Streams",
"status": {
"status": "In Development",
"enabled-by-default": true
},
"url": "https://streams.spec.whatwg.org/#rs",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=138967",
"specification": "Streams",
"comment": "The ReadableStream and ReadableStreamReader interfaces are available but not functional."
},
{
"name": "Shadow DOM",
"status": {
"status": "In Development"
},
"url": "http://w3c.github.io/webcomponents/spec/shadow/",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=148695",
"specification": "Web Components",
"description": "Functional encapsulation of HTML and CSS for Web Components.",
"contact": {
"name": "Ryosuke Niwa",
"twitter": "@RyosukeNiwa",
"email": "rniwa@webkit.org"
}
},
{
"name": "Shared Web Workers",
"status": {
"status": "Removed"
},
"url": "https://html.spec.whatwg.org/multipage/workers.html#shared-workers-introduction",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=140344",
"specification": "HTML5",
"comment": "The implementation of Shared Web Workers was imposing undesirable constraints on the engine. The feature never gained any adoption and was eventually removed from the engine."
},
{
"name": "Srcset w descriptor and related sizes attribute",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://html.spec.whatwg.org/multipage/embedded-content.html#the-img-element",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=133620",
"specification": "HTML5",
"description": "Enable handling the variable width responsive images use-case by defining multiple image resources in markup",
"contact": {
"name": "Yoav Weiss",
"twitter": "@yoavweiss",
"email": "yoav@yoav.ws"
}
},
{
"name": "Srcset x descriptor",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "https://html.spec.whatwg.org/multipage/embedded-content.html#the-img-element",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=110252",
"specification": "HTML5",
"description": "Enable handling the fixed width responsive images use-case by defining multiple image resources in markup",
"contact": {
"name": "Yoav Weiss",
"twitter": "@yoavweiss",
"email": "yoav@yoav.ws"
}
},
{
"name": "Subresource Integrity",
"status": {
"status": "Under Consideration"
},
"url": "https://w3c.github.io/webappsec-subresource-integrity/",
"description": "Extends script and link elements with an integrity attribute that contains a cryptographic hash of the representation of the resource the author expects to load.",
"contact": {
"name": "Jonathan Davis",
"email": "web-evangelist@apple.com",
"twitter": "@jonathandavis"
}
},
{
"name": "Template Element",
"status": {
"status": "Done",
"enabled-by-default": true
},
"url": "http://www.w3.org/TR/html5/scripting-1.html#the-template-element",
"webkit-url": "https://bugs.webkit.org/show_bug.cgi?id=124637",
"documentation-url": "https://developer.mozilla.org/en-US/docs/Web/HTML/Element/template",
"specification": "Web Components",
"description": "Declares HTML fragments that can be cloned and inserted into the document by a script."
}
]
}