Microsoft Edge Platform Status
View the status of web platform features in Microsoft Edge (Chromium) and Microsoft Edge (EdgeHTML).
Note: This is not an exhaustive list of features. We will add more features to this list over time.
Features (355 Results)
in
Show features with:
These statuses in Microsoft Edge (Chromium)
These statuses in other browsers
Accelerometer Supported
Provides access to device’s acceleration along its three primary axes.
Accessible Name and Description: Computation and API Mappings 1.1 Not supported
Determines names and descriptions of accessible objects to expose via UIA for assistive technologies to describe to users.
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Accessible Rich Internet Applications (WAI-ARIA) 1.1 Supported
Support for new WAI-ARIA 1.1 roles, states, and properties which define new accessible user interface elements since WAI-ARIA 1.0.
a[download] attribute Supported
When used on an <a>, this attribute signifies that the resource it points to should be downloaded by the browser rather than navigating to it.
Ambient Light Sensor API Not supported
Ambient Light Event API which is a handy way to make a web page or web app aware of any change in light intensity.
APNG image format Supported
APNG is an extension of the PNG format, adding support for animated images.
Application Cache Deprecated
Enables web pages to work without the user being connected to the internet
App shortcuts Supported
Lets a web application register shortcuts for common tasks. These would typically be added to the app launcher icon (for a progressive web app) enabling the user to quickly run key tasks.
ARIA Landmark Roles Supported
Support for ARIA roles indicating regions of the page intended as navigational landmarks.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Array.prototype.includes (ES2016) Supported
Method to determine whether an array includes a given element.
Arrow function (ES6) Supported
The arrow (=>) provides a shorthand for the function keyword with lexical 'this' binding.
ASM.js Supported
Performance options for a low-level subset of JavaScript, including recognition of the 'use asm' directive and ahead-of-time compilation.
Async Functions Supported
Async functions make it easy to write code which needs to "block" on certain asynchronous events JavaScript. Async/await does this by providing a simpler and more ergonomic way to use Promises. To block on a value, use the 'await' keyword. Async/await can be implemented based on a desugaring to generators, as described in the following design doc: https://docs.google.com/document/d/1K38ct2dsxG_9OfmgErvFld4MPDC4Wkr8tPuqmSWu_3Y/edit?usp=sharing
Asynchronous Iterators Supported
Introduces the AsyncIterator interface, an asynchronous iteration statement (for-await-of), and async generator functions.
Audio Output Devices API Supported
The Audio Output Devices API allows a Web application to direct audio output to authorized endpoints other than the user agent default.
Audio tracks Not supported
Adds the ability to get information about multiple audio tracks, and switch between them using the AudioTrack.enabled attributes.
AV1 Decoder Supported
AV1 is a next generation codec developed by the Alliance for Open Media. AV1 improves compression efficiency over the VP9 video codec.
Backdrop filter In development
Applies a CSS filter effect to the content behind an element. This is not the element's background but the content that would be drawn behind it.
Prefixed version: Microsoft Edge build 17063+
-
In development in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
In development in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
In development in Safari
background-blend-mode Supported
Specifies the blending mode used for each background layer
Preview in: Microsoft Edge build 17763+ by enabling in about:flags
Background Sync API Supported
Provides an API for notifying a Service Worker that the user has come back online, or to schedule periodic events to synchronize local data with the server.
Battery Status API Supported
Allows access to see the battery level of the device's battery
Beacon Supported
Enables web applications to asynchronously transfer data from the user agent to a web server, with the user agent taking the responsibility to eventually send the data.
Blob Supported
Allows you to construct Blobs directly (var blob = new Blob(["1234"], {type: 'text/plain'})). Blob() constructor also can take ArrayBufferView directly rather than constructing a blob with ArrayBuffer.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
Box Alignment In development
CSS properties for aligning boxes within their container. Allows for true vertical centering among other features.
Brotli Compressed Data Format Supported
Support for the Brotli data format as an HTTP content-encoding method.
Cache API Supported
The Cache API consists of additional ServiceWorker APIs which allow authors to fully and conveniently manage their content caches for offline use. An origin can have multiple, named Cache objects, whose contents are entirely under the control of Service Worker scripts.
Cache-Control: Immutable Not supported
Allows servers to identify resources that will not be updated during their freshness lifetime, thus, ensuring that a client never needs to revalidate a cached fresh resource to be certain it has not been modified.
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Canvas Supported
Provides an API to draw 2D graphics
Canvas 2D ellipse Supported
Provides a method to draw arcs on a 2D canvas drawing surface.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Canvas 2D Path2D Supported
Path2D objects can be used to declare paths that are then later used on CanvasRenderingContext2D objects.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Canvas2D text decoration Not supported
Add a textDecoration attribute to canvas 2D contexts, behavior similar to existing "font" attribute: It's a DOMString, parsed the same way as corresponding CSS property (text-decoration).
Canvas focus ring Not supported
Adds APIs to the canvas 2D context that make it possible to draw a focus ring around a canvas path and notify the operating system of the bounding box of the focused object for accessibility.
Classes (ES6) Supported
Syntax for declaring classes.
Client-side video editing (MediaBlob) Not supported
Clipboard API Supported
Standard APIs for interacting with the clipboard (copy/cut/paste operations). IE currently supports a legacy model for clipboard access.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Color input type Supported
Input controls for picking colors via <input type='color'>.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Compositing and Blending in Canvas 2D Supported
The canvas 2d context has the globalCompositeOperation attribute that is used to set the current compositing and blending operator.
Conditional Rules Supported
Support for the @supports at-rule and the "window.CSS.supports()" API
Conic Gradients Supported
Specifies a gradient where the color stops are placed around the circumference of a circle.
Console Logging APIs Supported
APIs to log messages to a connected developer tool. Covering console.assert, console.log, console.info, console.warn, console.error, console.debug, console.dir, console.dirxml.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Shipped in Internet Explorer 11
-
Supported in Safari
console.table Supported
console.table allows the logging of tabular data to a connected developer tool.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Content Security Policy Supported
Allows you to create an allow list of sources of trusted content, and instructs the browser to only execute or render resources from those sources.
Content Security Policy Level 2 Supported
An evolution of the Content Security Policy specification, allowing developers to create a whitelist of sources of trusted content, and instructing the browser to only execute or render resources from those sources.
Credential Management API Supported
Credential Management API describes an imperative API enabling a website to request a user’s credentials from a user agent, and to help the user agent correctly store user credentials for future use. For EdgeHTML, only WebAuthn is supported.
Cross-Domain Font Loading Deprecated
Increases interoperability with the web by relaxing domain and licensing metadata restrictions for EOT, WOFF, and TrueType fonts. Development work for IE is currently for Windows Phone only.
-
Deprecated in Microsoft Edge (Chromium)
-
In development in Microsoft Edge (EdgeHTML)
-
Deprecated in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSP Level 3 strict-dynamic source expression Supported
Allows script loaded via a CSP2 nonce-based or hash-based whitelist to load other script, enabling developers and site administrators to reduce their reliance on whitelists and to tighten CSP implementations.
CSP upgrade-insecure-requests directive Supported
Allows a server to instruct the user agent to upgrade insecure requests via a Content-Security-Policy header. This directive is meant to make it even easier for a site administrator to move towards using all secure transports, while avoiding having to make massive updates to URLs in their web applications.
CSS all shorthand Supported
The all property is a shorthand that resets all CSS properties except direction and unicode-bidi
CSS calc() Supported
Method of allowing calculated values for length units, i.e. width: calc(100% - 3em)
CSS Containment Supported
A primitive for isolating style, layout, and paint. This will allow web developers to opt into the various aspects of the pipeline, allowing for UA optimizations.
CSS Contextual Reference Element Pseudo-class :scope Supported
The :scope pseudo-class represents any element that is in the contextual reference element set.
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS Custom Properties (a.k.a. CSS Variables) Supported
Introduces cascading variables as a new primitive value type that is accepted by all CSS properties, and custom properties for defining them.
CSS Device Adaptation Not supported
The @viewport rule, in combination with media queries, enabled web developers to optimize the layout of sites and apps for different devices with minimal effort. It generalizes the viewport meta tag to CSS, while being much simpler to understand and without the quirks that exists with the meta tag.
Preview in: by enabling in about:flags
-
Not supported in Microsoft Edge (Chromium)
-
prefixed in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
CSS filter() image function Not supported
The function allows filtering an CSS input image with a set of filter functions. The used filter functions are the same as for the CSS filter property. The filter() function can be animated as well.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
In development in Safari
CSS filter(url) using SVG elements Supported
The function allows filtering using SVG Filter elements as the filter function.
CSS Font Loading API Supported
This CSS module describes events and interfaces used for dynamically loading font resources.
CSS font-stretch Supported
Add support for the CSS font-stretch property.
CSS Gradient Midpoints Supported
Allows specifying an optional location between the color stops of a CSS gradient.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS Grid Layout Supported
A two-dimensional grid-based layout system, optimized for user interface design.
Prefixed version: IE 10+, Microsoft Edge build 10240+
CSS image-set() Supported
Enables responsive images in CSS by specifiying multiple resolutions of an image that the browser can select from for the given situation.
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS initial value Supported
If the cascaded value of a property is the initial keyword, the property’s initial value becomes its specified value.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS Intrinsic Sizing Supported
Extends the CSS sizing properties with keywords that represent content-based "intrinsic" sizes and context-based "extrinsic" sizes, allowing CSS to more easily describe boxes that fit their content or fit into a particular layout context.
CSS Level 3 attr() function Not supported
Support the attr() function as a component value in properties applied to an element. Currently, attr() is only supported in the content property applied to pseudo-elements.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
CSS Logical Properties Level 1 Not supported
Introduces logical properties and values that provide the author with the ability to control layout through logical, rather than physical, direction and dimension mappings.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
CSS Motion Path Supported
Motion paths allow authors to animate any graphical object along an author specified path.
CSS Mutability Pseudo-classes Supported
:read-only and :read-write pseudo-classes to match elements which are considered user-alterable for the purposes of Selectors.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSSOM View smooth scroll API Supported
Adds an optional argument to existing scroll APIs that specifies whether scrolling should be smooth. Also adds a CSS property for this.
CSS outline-offset Supported
Allows you to define an offset from the border box for your outline
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS pointer-events Supported
Enables control of whether an element can receive input events from a pointing device using an API similar to the existing pointer-events property from SVG.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Shipped in Internet Explorer 11
-
Supported in Safari
CSS Range Pseudo-classes Supported
:in-range and :out-of-range pseudo-classes to match elements that are candidates for constraint validation, have range limitations, and are/are not suffering from underflow or overflow.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS Relational Pseudo-class :has Not supported
The relational pseudo-class, :has(), is a functional pseudo-class taking a relative selector list as an argument. Similar to jQuery’s :has() selector.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
CSS resize Supported
Allows one to specify whether or not an element is resizable by the user, and if so, along which axis/axes
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS Scroll Snap Points Supported
Enables rich, customizable, and performant scrolling experiences like pagination of carousels by using snap points that enforce the scroll offsets that a scroll container may end at after a scrolling operation has completed.
Prefixed version: IE 10+, Microsoft Edge build 10240+
CSS Selectors Level 4 Not supported
Extends the selectors with :matches, :has, :not(complex selector), :dir, case insensitive attribute matching and more.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
CSS tab-size property Supported
The tab-size property sets the size used to render tab characters in situations where white space is preserved
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS touch-action Supported
New CSS property to enable websites to declaratively state how touches should be handled for purposes of scrolling and zooming.
Prefixed version: IE 10+, Microsoft Edge build 10240+
CSS Transforms - preserve-3d Supported
Augments existing CSS 3d transforms by facilitating the construction of complex 3d scenes.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS Transitions for SVG elements Supported
Allows CSS Transitions for SVG elements.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS unset value Supported
If the cascaded value of a property is the ‘‘unset’#’ keyword, then if it is an inherited property, this is treated as ‘inherit’, and if it is not, this is treated as ‘initial’. This keyword effectively erases all declared values occurring earlier in the cascade, correctly inheriting or not as appropriate for the property (or all longhands of a shorthand).
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
CSS vmax unit Supported
A viewport relative length unit equal to the larger of vw (viewport width) or vh (viewport height).
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
CSS Will Change Supported
Adds a will-change CSS property, that can be used to signal that a particular property is likely to be changed in the future, or that an element's content is likely to change.
Custom Elements Supported
Method for registering (creating) custom elements in script (often used in Web Components).
Custom filters (shaders) Not supported
Filter effects are a way of processing an element’s rendering before it is displayed in the document.
-
Not supported in Microsoft Edge (Chromium)
-
Not Currently Planned in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
<data> Element Not supported
An HTML element which represents its content in machine-readable and human-readable formats.
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
<datalist> Element Supported
Shows a list of pre-defined options to suggest to the user when entering an input element.
Default parameter (ES6) Supported
Allows formal parameters to be initialized with default values if no value is passed.
Delegated ink trail Not supported
Enable web applications to describe the last input pointer with sufficient detail so that the browser can present the segments of the ink trail for input that has been delivered, but not yet rendered (the pointer trail).
Destructuring (ES6) Supported
Destructuring assignment allows extracting data from arrays or objects using a syntax that mirrors array and object literals.
<details>/<summary> Supported
Interactive widget to show/hide content. NOTE: A first implementation landed in some Preview builds of Edge, but we had to pull it off due to quality issues.
Device Motion Supported
Provides access to device's physical motion.
Device Orientation Supported
Provides access to device's physical orientation
devicePixelRatio on zoom Supported
Update window.devicePixelRatio on full page zoom so that it accurately portrays the ratio between css and device pixels.
<dialog> element for modals Supported
An HTML element for modal and non-modal dialog boxes
Digital Publishing Accessibility API Mappings Not supported
Defines how user agents map the Digital Publishing WAI-ARIA Module markup to platform accessibility APIs.
-
Not supported in Microsoft Edge (Chromium)
-
Under Consideration in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Directory Upload Not supported
Enable directory uploading by allowing a developer to read directory contents (files and sub-directories) asynchronously and be able to identify the directory structure. For EdgeHTML, more information about the webkitdirectory attribute can be found here: https://developer.mozilla.org/en-US/docs/Web/API/HTMLInputElement/webkitdirectory.
-
Not supported in Microsoft Edge (Chromium)
-
Partial Support in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
display: contents Supported
"display: contents" allows you to control the box generation of an element. The element with "display: contents" won't generate any box, but its children and pseudo-elements will still do it as normal. It's like the element has been replaced by its children and pseudo-elements.
DNS Prefetch Resource Hints Supported
A link relation type used to indicate an origin that will be used to fetch required resources and that the browser should resolve as early as possible.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
DOM3 Keyboard Events Supported
KeyboardEvent: keydown, keyup, keypress
DOM3 mouseenter & mouseleave Events Supported
DOM event analog of CSS :hover psuedo-selector that fires as the mouse enters and exits the bounding box of an element (including its children).
DOM3 Wheel Events Supported
Implementation of the standard DOM Level 3 WheelEvent for mouse wheel rotation.
DOM Event Constructors Supported
Replaces document.createEvent() and associated event object init methods with constructors for each event interface.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
DOM Level 3 XPath Supported
Provides simple functionality to access a DOM tree using the XPath syntax.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
DOM ParentNode methods: prepend, append, and ChildNode methods: before, after, and replaceWith Supported
Convenience methods for working with DOM Node trees
dppx Unit for the resolution Media Query Supported
One dppx unit represents the number of 'dots' in a CSS px.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Drag and Drop Directories Supported
Allows dragging and dropping entire folders using HTML5 Drag and Drop. Extends the DataTransferItem with a method to get a FileEntry/DirectoryEntry.
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
DualScreen/Foldables CSS additions Not supported
Add new CSS media feature and environment variables to enable web developers to target a new class of foldable devices with responsive layouts.
ECMAScript Internationalization API Supported
Provides APIs for string comparison and date/time/number formatting in a locale-aware manner.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
EditContext API Not supported
Simplifies the process of integrating a web app with advanced text input methods such as VK shape-writing, Handwriting panels, speech recognition, IME Compositions etc., improves accessibility and performance, and unlocks new capabilities for web-based editors.
Efficient Script Yielding - setImmediate() Not supported
Allows web applications to flush the browser event queue and receive an immediate callback.
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
Encoding Standard Supported
This specification addresses gaps so user agents do not have to reverse engineer encoding implementations.
Encrypted Media Extensions Supported
Defines a common API that may be used to discover, select and interact with such systems as well as with simpler content encryption systems.
Prefixed version: IE 11, Microsoft Edge build 10240+
ES6 Block bindings (let, const, function) Supported
Allows developers to explicitly qualify access to variables within a block.
ES6 Iterators (i.e. the for-of feature) Supported
Iterates over iterable objects (including arrays, array-like objects, iterators and generators), invoking a custom iteration hook with statements to be executed for the value of each distinct property.
ES6 Numeric Literals Supported
Allows binary and octal numeric literals using 0b101 and 0o753 respectively.
ES6 Object Literal Enhancements Supported
Adds computed properties, concise method definitions, and short-hand for properties whose value is initialized to a same-named variable.
ES Module Attributes Under Consideration
An inline syntax for module import statements to pass on more information alongside the module specifier.
-
Under Consideration in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Event Listener "once" Option Supported
Option to mark an event listener to fire only once
Exclusions Not supported
Define areas inline content should avoid, and how inline content should wrap around them.
Prefixed version: IE 10+, Microsoft Edge build 10240+
-
Not supported in Microsoft Edge (Chromium)
-
prefixed in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
Exponentiation Operator (ES2016) Not supported
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Extended srcset and sizes support Supported
Extends the current implementation of the srcset attribute by adding support for the width descriptor and the sizes attribute.
Fetch API Supported
The Fetch specification defines requests, responses, and the process that binds them; fetching.
FIDO U2F Not supported
FIDO Universal Second Factor API allows online services to augment the security of their existing password infrastructure by adding a strong second factor to user login via a USB or NFC device. Also see FIDO 2.0 Web APIs, a newer specification that supports additional authentication methods, such as biometrics, and can replace passwords altogether as well as provide U2F functionality.
FileReader Supported
The FileReader object lets web applications asynchronously read the contents of files (or raw data buffers) stored on the user's computer, using File or Blob objects to specify the file or data to read.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
FileWriter Supported
Enables writing to files from web applications.
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Filters Supported
Apply filter effects to arbitrary DOM elements.
FindText API Not supported
Provides an API for finding ranges of text in a document, with a variety of selection criteria. Similar to a user-agent's find-on-page or page-search capability.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
FLAC Audio Codec Supported
An open codec for audio.
Flexbox Supported
A CSS box model optimized for user interface design. The children of a flex container can be laid out in any direction and can "flex" their sizes to fill unused space and avoid overflowing the parent.
Prefixed version: IE 10+, Microsoft Edge build 10240+
:focus-visible pseudo-class Not supported
Applies while an element matches the :focus pseudo-class and the user agent (browser, etc) determines via heuristics that the focus should be made evident on the element.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
:focus-within pseudo-class Supported
The :focus-within pseudo-class applies to elements for which the :focus pseudo class applies. An element also matches :focus-within if one of its descendants in the flat tree (including non-element nodes, such as text nodes) matches the conditions for matching :focus.
font-variant longhands Supported
Allows authors to utilize longhand properties of font-variant-caps, font-variant-ligatures, font-variant-numeric, font-variant-alternates, font-variant-east-asian, font-variant-position for font selection and adjustments rather than utilizing lower level props such as font-feature-settings.
Font Variation Properties with OpenType Variable Font Support Supported
Allows multiple instances of fonts to be defined by interpolating glyph outlines along different axis.
Forced colors mode Supported
Adds the 'forced-colors' and 'forced-color-adjust' media features, which is used to detect if the user agent has enabled a forced colors mode where it enforces a user-chosen limited color palette on the page.
Form attribute Supported
Attribute for associating input and submit buttons with a form.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Frame Timing Not supported
An interface for web applications to access runtime performance information of the browser event loop.
From-Origin header Not supported
Allows authors to send a header of a whistelisted set of domains from the server to other origins from loaded or accessing the content
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Fullscreen API Supported
Programmatically instruct content on the page to be presented in the browser's full screen (kiosk) mode. Starting in 14.14393, this is prefixed in Edge due to compatibility issues. We are working with other browser vendors to coordinate switching to an unprefixed implementation in the future.
Prefixed version: IE 11, Microsoft Edge build 10240+
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
GamePad API Supported
Gives JS access to a game controller via USB.
Generated Content for Paged Media Not supported
CSS properties helpful for printed publication.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Generators (ES6) Supported
A generator is a special type of function that works as a factory for iterators.
Geolocation Supported
Provides access to device's physical location
Geometry Interfaces Supported
This specification provides basic geometric interfaces to represent points, rectangles, quadrilaterals and transformation matrices that can be used by other modules or specifications.
Gradients Supported
Gradients provide a method to, over a customizable amount of space, transition from one color to another.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
Gyroscope Supported
Provides access to device’s rotation around its three primary axes.
H.264/AVC for RTC Not supported
Support for H.264/AVC in RTC scenarios.
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Hardware Concurrency Supported
An API for reading the system's total number of logical processors available to the user agent, up to an optional thread limit per origin.
High Resolution Time Supported
Enables reliable, high-resolution timing of client-side performance.
High Resolution Time 2 Supported
An API that provides translation of the current sub-millisecond resolution time between origins.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
High Resolution Time 3 Not supported
Adds performance.timeOrigin, allowing DOMHighResTimeStamps from separate Windows to be interleaved into a single timeline.
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
HTMLCanvasElement toBlob method Supported
Creates a Blob object representing a file containing the image in the canvas, and invokes a callback with a handle to that object.
Prefixed version: IE 10+, Microsoft Edge build 10240+
HTML Form HTTP Extensions Not supported
An addendum to HTML5 forms extending the abilities of configuring HTTP requests through HTML markup.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
HTML Imports Deprecated
Import HTML documents into other HTML documents (often used in Web Components).
HTML Sections in Accessibility API Supported
Exposes HTML sectioning elements (such as section, article, main, etc.) in the Accessibility API.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
HTTP/2 Supported
A faster protocol for transporting web content standardized by the IETF.
HTTP/2 Server Push Supported
HTTP/2 allows a server to pre-emptively send (or "push") responses (along with corresponding "promised" requests) to a client in association with a previous client-initiated request. This can be useful when the server knows the client will need to have those responses available in order to fully process the response to the original request.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
HTTP Client Hints Supported
Header for proactive content negotiation; just as the Accept header allowed clients to indicate what formats they prefer, Client Hints allow clients to indicate a list of device and agent specific preferences.
HTTP Live Streaming (HLS) Supported
Expands our plugin-free adaptive video streaming to support the popular HLS protocol for transferring unbounded streams of multimedia data.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
HTTP Strict Transport Security (HSTS) Supported
Header to inform the browser to always request a given domain over SSL, reducing MITM attack surface area.
iframe[sandbox] attribute Supported
Method of running external site pages with reduced privileges (i.e. no JavaScript) in iframes (<iframe sandbox="allow-same-origin allow-forms" src="..."></iframe>)
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
iframe[seamless] attribute Not supported
The seamless attribute is used to embed an <iframe> in the calling page without scrollbars or borders (e.g. seamlessly) and with the parent document's styles applying to the embedded seamless iframe.
iframe[srcdoc] attribute Supported
Gives the content of an iframe as a src context to embed (e.g. <iframe seamless srcdoc="<b>Hello World</b>"></iframe>).
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
image-rendering Supported
Provides a hint to the browser on which scaling algorithm should be used.
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
IME API In development
Provides Web applications with scripted access to an IME (input-method editor).
Prefixed version: IE 11, Microsoft Edge build 10240+
<img srcset> Supported
Enable a responsive images solution by providing the browser multiple resources in varying resolutions for a single image.
IndexedDB Supported
An asynchronous client-side storage API offering fast access to large amounts of structured data
IndexedDB Arrays and MultiEntry Support Supported
Extends the existing IndexedDB implementation with support for compound keys, indexed array values, and multiEntry.
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
inert attribute Supported
The inert attribute would allow web authors to mark parts of the DOM tree as inert: When a node is inert, then the user agent must act as if the node was absent for the purposes of targeting user interaction events, may ignore the node for the purposes of text search user interfaces (commonly known as "find in page"), and may prevent the user from selecting text in that node.
Initial Letter Not supported
Allows the author to set the size and depth at which it sinks into the surrounding text.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
inputmode Supported
The inputmode content attribute is an enumerated attribute that specifies what kind of input mechanism would be most helpful for users entering content into the form control.
International input[type=email] validation Not supported
Adding support for international email addresses that use UTF-8 characters (e.g. 伊昭傑@郵件.商務, राम@मोहन.ईन्फो)
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Intersection Observer Supported
An interface to allow a web developer to asynchronously query the position of an element with respect to other elements or the global viewport.
JavaScript module import() Supported
Adds a function-like import() module loading syntactic form to JavaScript. Enables dynamically loading parts of a JavaScript application at runtime.
Karaoke Web Standard Not supported
Provides semantic language processing for two-way communication with a remote host. This new interface creates a system-to-system forced sonic recognition on the receiving party.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
<keygen> element Deprecated
A form element for a key pair generator control. Support here indicates UI for picking keys and some transport to submit them. However, significant interoperability issues exist with the DOM interfaces and protocols for this feature.
-
Deprecated in Microsoft Edge (Chromium)
-
Not Currently Planned in Microsoft Edge (EdgeHTML)
-
Deprecated in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Magnetometer Supported
Provides access to magnetic field measurements along the device's three primary axes.
<main> element Supported
Semantic HTML5 element that represents the main content of the document or application.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Map (ES6) Supported
Map objects are simple key/value maps.
Masks Supported
Allows hiding of portions of a visible elements.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
In development in Firefox
-
Not supported in Internet Explorer 11
-
In development in Safari
matchMedia Supported
API for testing if a given media query will apply.
Math Built-ins (ES6) Supported
Math related functions - sign, trunc, sinh, cosh, tanh, asinh, acosh, atanh, log10, log2, hypot, fround, clz32, cbrt, log1p, expm1.
MathML Supported
An application of XML for describing mathematical notations and capturing both its structure and content.
MediaCapabilities: query HDR with decodingInfo() In development
Provides APIs for websites to detect whether HDR formats, i.e. Dolby Vision, HDR10(+), and HLG, can be decoded and rendered by the browser.
MediaCapabilities: query spatial audio with decodingInfo() In development
Adds APIs for detecting whether spatial audio formats, i.e., Dolby Atmos and DST:X, can be rendered.
Media Capture and Streams Supported
Provides access to the user's local audio and video input/output devices (getUserMedia API).
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Media Capture from Canvas Supported
Media Capture API can be used to capture Canvas content as MediaStream to be recorded or transmitted to remote peers.
Media Capture from HTML Media Element Supported
Media Capture API can be used to capture non-DRM content from mediaelement into another MediaStream.
Media Fragments Supported
Standardizes a URL fragment syntax for specifying a fragment of a media resource.
-
Supported in Microsoft Edge (Chromium)
-
Partial Support in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Media Queries Level 4: pointer and hover Supported
Allows to query the presence and accuracy of the user's pointing input (e.g. for differentiating touch versus mouse). Additionally, allows the page to query whether the user's pointing input supports hover.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Media Queries: prefers-reduced-motion Not supported
Used to detect if the user has requested the system minimize the amount of animation or motion it uses.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Media Queries: resolution feature Supported
Allows to query the device pixel count per CSS unit
MediaRecorder Supported
Encode audio and video streams in the browser.
Media Session Supported
Enable websites to customize media metadata so they can control the notification and lock screen UI. Also, allow them to control media in the page from outside the page, such as platform UIs and media keys.
Media Source Extensions Supported
Allows appending data to an <audio>/<video> element.
Message Channels Supported
A messaging system that allows documents to communicate with each other regardless of their source domain, in a way designed to avoid cross-site scripting attacks.
Meta Referrer Supported
Using the referrer metadata attribute, a document can control the behavior of the Referer HTTP header attached to requests that originate from the document. For EdgeHTML, only `never`, `always`, `origin`, `default` tokens are supported for navigation.
<meter> Element Supported
The HTML meter element allows representation of a scalar measurement of a known range, or fractional value, i.e. a gauge. Distinct from the progress element.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Microdata Not supported
Microdata is used to nest semantics within existing content on web pages.
-
Not supported in Microsoft Edge (Chromium)
-
Not Currently Planned in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
mix-blend-mode Supported
Provides a way to blend an HTML or SVG element with its backdrop
Modules (ES6) Supported
Language-level support for defining and consuming modules.
Motion JPEG (MJPG) Supported
Adds support for the MJPG video format, popular with IP cameras.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Multi-column (full support) Supported
Allows content to be flowed into multiple columns with a gap and a rule between them using CSS.
Mutation Observers Supported
Provides notifications when DOM nodes are rearranged or modified.
Network Error Logging Supported
This specification defines an interface to store and retrieve error data related to the previous navigations of a document.
New System Color Keywords Supported
Give users the ability to customize their sites with the relevant system colors when in forced colors mode. The keywords being added are ActiveText, Field, and FieldText.
Number Built-ins (ES6) Supported
New methods and properties on Number, including isFinite, isInteger, isSafeInteger, isNaN, EPSILON, MIN_SAFE_INTEGER, and MAX_SAFE_INTEGER.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Object Built-ins (ES6) Supported
New methods on Object including assign, is, getOwnPropertySymbols, and setPrototypeOf
object-fit and object-position (images) Supported
CSS properties that control the position and size of replaced content within the content box
object-fit and object-position (video/canvas/etc) Supported
CSS properties that control the position and size of replaced content within the content box
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Object.getOwnPropertyDescriptors Not supported
ECMAScript proposal for Object.getOwnPropertyDescriptors.
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Object.observe() Deprecated
Observe changes to JS objects.
Object rest/spread properties Supported
Introduces analogous rest properties for object destructuring assignment and spread properties for object literals.
OGG Container Supported
An open multimedia container.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
ol[reversed] attribute Supported
A boolean attribute that reverses the order of an ordered list when present.
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
onerror Exception Parameter (5th Parameter) Supported
Unhandled exceptions trigger the 'window.onerror' callback (or 'self.onerror' inside Workers) for centralized handling. The 5th parameter will have the exception itself.
oninvalid event handler Supported
Provides specified alert text if an input element is invalid.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Opus Audio Playback Supported
An open codec for audio playback.
Orientation Sensor Supported
Provides access to device’s physical orientation in WebGL-compatible quaternion and rotation matrix representations. For EdgeHTML, DeviceOrientation is supported. More information can befound here: https://developer.mozilla.org/en-US/docs/Web/API/Detecting_device_orientation#DeviceOrientationEvent.
Origin-Signed HTTP Exchanges Supported
Allows sites to send HTTP request+response pairs (exchanges) that are authoritative for an origin, even when the server itself is not authoritative for that origin.
<output> Element Supported
An HTML element for representing the result of a calculation or user action.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Page Visibility API Supported
Provides an API to ask whether the current tab is visible or not. If so, you might want to throttle back action or set an idle state.
Passive Event Listeners Supported
Provides an API to mark event listeners as "passive", primarily to allow for scrolling performance improvements
Payment Handler API Supported
A web standard way to help payment providers create and grow an ecosystem to simplify handling and processing payments on the web for developers and merchants.
Payment Request API Supported
A web API to allow merchants (i.e. web sites selling physical or digital goods) to easily accept payments from different payment methods with minimal integration.
Performance Observer Supported
An interface to observe the performance timeline (https://w3c.github.io/performance-timeline) and receive notifications of new performance entries as they are recorded.
<picture> Element Supported
Enable a responsive images solution by declaring multiple resources for an image using CSS media queries.
Picture-in-Picture Supported
An API for allowing websites to create a floating video window always on top of other windows so that users may continue consuming media while they interact with other content sites, or applications on their device.
Platform for Privacy Preferences 1.0 (P3P 1.0) Not supported
The Platform for Privacy Preferences Project (P3P) enables web sites to express their privacy practices in a standard format allowing user agents to automate decision-making based on these practices when appropriate.
-
Not supported in Microsoft Edge (Chromium)
-
Deprecated in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Deprecated in Internet Explorer 11
-
Not supported in Safari
Pointer Events Supported
Unified pointer input API (e.g. mouse, pen, touch input) which addresses several existing problems (especially on touchscreen laptops) and provides future extensibility.
Prefixed version: IE 10+, Microsoft Edge build 10240+
Pointer Lock (Mouse Lock) Supported
Gives access to raw mouse movement, locks the target of mouse events to a single element, eliminates limits of how far mouse movement can go in a single direction, and removes the cursor from view. Obvious use cases are for first person or real time strategy games.
position: sticky Supported
position: sticky is a new way to position elements and is conceptually similar to position: fixed. The difference is that a stickily positioned element behaves like position: relative within its parent, until a given offset threshold is met.
postMessage Supported
Safely enables cross-origin communication.
Preconnect Resource Hints Supported
A link relation type used to indicate an origin that will be used to fetch required resources, so the browser can open a connection early for resouces that will be required later in the loading process.
Prefetch Resource Hints Supported
Indicates the browser should preemptively fetch and cache the specified resource.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
Preload Supported
A keyword that may be used with "link" elements which provides a declarative fetch primitive that initiates an early fetch and separates fetching from resoruce execution.
Prerender Resource Hints Supported
Provides a hint to the browser that another page is likely to be loaded by the user (such as the first result of a search) such that it may be prerendered for better performance.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Shipped in Internet Explorer 11
-
Not supported in Safari
Promise.prototype.finally Supported
Registers a callback to be invoked when a promise is settled (whether it is fulfilled or rejected), allowing for cleanup of pending or ongoing actions depending on that promise.
Promises (ES6) Supported
Allows easier and cleaner asynchronous coding. Adds the Promise constructor, along with the 'all' and 'race' utility methods to the language itself.
__proto__ (ES6) Supported
Support for legacy prototype manipulation similar to Object.setPrototypeOf.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Shipped in Internet Explorer 11
-
Supported in Safari
Proxies (ES6) Supported
Proxies are objects for which the programmer has to define the semantics in JavaScript.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Public Key Pinning Extension for HTTP Supported
Certificate public key pinning is a mechanism which allows specifying a key that must be present in the certificate chain associated with a domain name. HTTP Public Key Pinning (HPKP) is one way of doing certificate public key pinning. In this method, site owner defines pin rules for his domain name via HTTP header. This mechanism assumes that user has had a first clean connection to the site.
Push API Supported
Provides webapps with scripted access to server-sent notifications.
Quota Management API Supported
This API can be used to check how much quota an app/origin is using.
-
Supported in Microsoft Edge (Chromium)
-
Not Currently Planned in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Reflect (ES6) Supported
Provides methods for use in operations that are intercepted. Reflect methods are often used with proxies because they allow you to delegate to default behavior without implementing the default behavior in your code.
RegExp Built-ins (ES6) Not supported
New methods on RegExp.prototype including match, replace, search, and split.
Preview in: Microsoft Edge build 14342+ by enabling in about:flags
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Regions Not supported
Magazine-like content flow into specified regions.
Prefixed version: IE 10+, Microsoft Edge build 10240+
requestAnimationFrame() Supported
Offload animation repainting to browser for optimized performance. You should call this method whenever you're ready to update your animation onscreen. This will request that your animation function be called before the browser performs the next repaint.
requestIdleCallback Supported
Allows developers to cooperatively schedule background tasks to avoid introducing delays with high priority tasks in the same event loop.
Resize Observer Supported
Allows a web developer to attach an observer to an element and a callback will be fired when that element is resized
Resource Timing API Supported
Allows web applications to access timing information related to HTML elements.
Rest parameters (ES6) Supported
Allows representation of an indefinite number of arguments as an array.
RTC Data Channels Supported
Data channels allow a web application to send and receive generic application data peer-to-peer.
-
Supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Run PWA on OS Login Supported
Provides a mechanism for a Progressive Web Application (PWA) to be configured at install time with the option to be launched automatically when a user logs in to its OS session.
Scoped Styles Deprecated
Boolean attribute for the <style> element (<style scoped>). When present, its styles only apply to the parent element.
-
Deprecated in Microsoft Edge (Chromium)
-
Not Currently Planned in Microsoft Edge (EdgeHTML)
-
Deprecated in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Screen Capture Not supported
Screen Capture API allows a user's display or parts thereof be used as the source of a media stream. NOTE: This feature works only on Window 10 Pro and Enterprise editions.
-
Not supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
In development in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Screen Orientation API Supported
Provides the ability to read the screen orientation state, to be informed when this state changes, and to be able to lock the screen orientation to a specific state.
Prefixed version: IE 11, Microsoft Edge build 10240+
Secure Contexts In development
As the web enables more powerful apps, features which enable those apps should only be enabled in contexts which meet a specific security level. This also exposes the APIs that identify if you’re in a secure context.
Selection API Supported
Based on APIs from HTML5 and DOM Range, this specification includes additional methods for programmatically inspecting and modifying the selection.
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
selectionDirection attribute on text input elements Supported
Returns the string corresponding to the current selection direction on text input elements: "forward", "backward", or "none".
-
Supported in Microsoft Edge (Chromium)
-
Supported in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Supported in Firefox
-
Not supported in Internet Explorer 11
-
Supported in Safari
Server-Sent Events (EventSource) Supported
Enables push notifications from the server received as DOM events.
-
Supported in Microsoft Edge (Chromium)
-
Under Consideration in Microsoft Edge (EdgeHTML)
-
Supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Server Timing Not supported
Enables the server to communicate request-response cycle metrics to the user agent, and provides a JavaScript interface to enable applications to access and act on those metrics.
-
Not supported in Microsoft Edge (Chromium)
-
Not supported in Microsoft Edge (EdgeHTML)
-
Not supported in Chrome
-
Not supported in Firefox
-
Not supported in Internet Explorer 11
-
Not supported in Safari
Service Worker Supported
ServiceWorkers (formerly Navigation Controllers) are a new system that provides event-driven scripts that run independent of web pages. They are similar to SharedWorkers except that their lifetime is different and they have access to domain-wide events such as network fetches.
Set (ES6) Supported
Set objects let you store unique values of any type, whether primitive values or object references.
Shadow DOM Supported
Enables DOM tree encapsulation. Without it, widgets may inadvertently break pages by using conflicting CSS selectors, class or id names, or JavaScript variables (often used in Web Components).
Shapes Supported
Define arbitrary shapes inside and around which inline content can flow.
showModalDialog Deprecated
The global showModalDialog() method displays a modal dialog box containing a specified HTML document. This feature has an incredibly high cost in terms of code complexity since it requires us to run an event loop on top of an arbitrary JavaScript stack. It also complicates the web platform by making task dispatch reentrant and hard to reason about.
-
Deprecated in Microsoft Edge (Chromium)
-