Fugu API Timeline

Allows web sites to communicate over GATT with nearby user-selected Bluetooth devices in a secure and privacy-preserving way. Status in Chrome is more complicated than can be captured by this form. In Chrome 56, this shipped on Android, ChromeOS, and macOS. In Chrome 70 it is shipping on Windows 10. For earlier versions of Windows and Linux, it is still behind a flag (chrome://flags/#enable-experimental-web-platform-features).

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	419413
Specification	https://webbluetoothcg.github.io
Chrome Status	Details
Stars	50

The web platform API to support programming USB devices.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	492204
Specification	https://wicg.github.io
Chrome Status	Details
Stars	38

Web Share Target allows websites to receive shared data (text, URLs, images) and register to be choosable by the user as targets from sharing contexts, including (but not limited to) Web Share.

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	Positive
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	668389
Specification	https://wicg.github.io
Chrome Status	Details
Stars	42

Web Share API Level 2 allows sharing of files from the web to an app of the user's choosing. The API enables web developers to build share buttons that display the same system share dialog boxes used by native applications. Level 1 enabled system share dialogs; however only text and urls could previously be shared.

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	In Development
Other
Safari	In Development
Developers	Positive

Implementation Information

Tracking Bug	903010
Specification	https://w3c.github.io
Chrome Status	Details
Stars	19

Implements programmatic copying and pasting of images for the Async Clipboard API. This change also updates navigator.clipboard.read() and navigator.clipboard.write() to comply with the specification. Programmatic copying and pasting of images is Chromium's top starred bug.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	Shipped/shipping
Developers	Strongly Positive

Implementation Information

Tracking Bug	150835
Specification	https://w3c.github.io
Chrome Status	Details
Stars	1821

Installed web applications can now receive file shares, e.g. images. Using the manifest, the web application can declare which MIME types and/or file extensions it accepts. Previously, mobile platforms allowed files to be shared to native applications, but not web applications.

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	Worth Prototyping
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	885313
Specification	https://w3c.github.io
Chrome Status	Details
Stars	9

The enterkeyhint content attribute is an enumerated attribute that specifies what action label (or icon) to present for the enter key on virtual keyboards. This allows authors to customize the presentation of the enter key in order to make it more helpful for users.

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	Positive
Other
Safari	Positive
Developers	No Signals

Implementation Information

Tracking Bug	634330
Specification	https://html.spec.whatwg.org
Chrome Status	Details
Stars	10

The Get Installed Related Apps API (navigator.getInstalledRelatedApps) provides sites access to if their corresponding related applications are installed. Sites are only allowed to use this API if the native application has an established association with the web origin. The API was launched in Chrome 80. You can find details here: https://web.dev/get-installed-related-apps/

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	Negative
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	895854
Specification	https://wicg.github.io
Chrome Status	Details
Stars	19

Periodic Background Sync is an extension of Background Sync that allows websites to register tasks to be run in a service worker at periodic intervals with network connectivity.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Strongly Positive

Implementation Information

Tracking Bug	925297
Specification	https://wicg.github.io
Chrome Status	Details
Stars	23

Provides a way for websites to request information about the user’s contact(s) and provides a UI for the user to share those details in a way that makes it clear what is being shared with the website. This could be used for bootstrapping a friends list on a social network or (in an email/messaging application) to select message recipients.

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	860467
Specification	https://wicg.github.io
Chrome Status	Details
Stars	22

Allows web apps (as defined by the Web App Manifest standard) to set an app-wide badge in operating-system-specific places such as the shelf or home screen. Additionally, it gives the app a small, visible place to notify the user of new activity that might require attention, without showing a full notification. It can show additional information, such as an unread count or event type. It allows the app to convey this information when its windows are closed.

Availability

	Platform
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Positive
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	719176
Specification	https://w3c.github.io
Chrome Status	Details
Stars	43

The Text Detection API is a subset of the Shape Detection API which provides the ability to detect and optionally transcribe text in an image provided by script. The image may come from any type of image buffer source such as an <image>, <video> or <canvas> tag.

Availability

	Platform
	Android
	Mac

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	659138
Specification	https://wicg.github.io
Chrome Status	Details
Stars	25

Allows websites to register offline enabled content in the browser. This allows the browser to improve the offline experience and allow content browsing when the user is offline. This data could also be used to improve on-device search and to augment browsing history.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	973844
Chrome Status	Details
Stars	15

The WebOTP API (formerly called the SMS Receiver API) notifies an application when a specially-crafted SMS message is delivered to the user’s phone. The message must be addressed to the application's origin. The application only receives an OTP code in the message.

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	670299
Specification	https://wicg.github.io
Chrome Status	Details
Stars	34

An API that allows web applications to request a screen wake lock. Under the right conditions, and if allowed, the screen wake lock prevents the system from turning off a device's screen.

Availability

	Platform
	Android
	Chrome
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Positive
Other
Safari	Positive
Developers	Positive

Implementation Information

Tracking Bug	257511
Specification	https://w3c.github.io
Chrome Status	Details
Stars	117

The streams APIs provide ubiquitous, interoperable primitives for creating, composing, and consuming streams of data. A natural thing to do with a stream is to pass it to a web worker. This provides a fluent primitive for offloading work to another thread. Transferable streams add this capability by allowing ReadableStream, WritableStream, and TransformStream objects to be passed as arguments to postMessage().

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	Positive
Developers	Positive

Implementation Information

Tracking Bug	894838
Specification	https://streams.spec.whatwg.org
Chrome Status	Details
Stars	20

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.

Availability

	Platform
	Android
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	955497
Specification	https://www.w3.org
Chrome Status	Details
Stars	35

This API enables developers to build powerful apps that interact with other (non-Web) apps on the user’s device via the device’s file system. After a user grants a web app access, this API allows the app to read or save changes directly to files and folders selected by the user. Beyond reading and writing files, this API provides the ability to open a directory and enumerate its contents, as well as store file and directory handles in IndexedDB to later regain access to the same content.

Availability

	Platform
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Worth Prototyping
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	853326
Specification	https://wicg.github.io
Chrome Status	Details
Stars	102

The async clipboard api currently does not support the text/html format. This feature adds support for copying and pasting html from the clipboard. The HTML is sanitized when it is read and written to the clipboard.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	Shipped/shipping
Developers	Positive

Implementation Information

Tracking Bug	931839
Specification	https://www.w3.org
Chrome Status	Details
Stars	15

Aggregates and logs media settings ranges and photo capabilities in JSON. Changing MediaSettingsRange and PhotoCapabilities interfaces to dictionaries will improve developer ergonomics by allowing web developers to easily log and aggregate exposureCompensation, exposureTime, colorTemperature, iso, brightness, contrast, saturation, sharpness, focusDistance, pan, tilt, zoom, and photo capabilities (redEyeReduction, imageHeight, imageWidth, fillLightMode).

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	934063
Specification	https://w3c.github.io
Chrome Status	Details
Stars	34

Adds the ability to request unadjusted/unaccelerated mouse movement data when in PointerLock. If this unadjustedMovement is set to true, then the pointer movements will not be affected by the underlying platform modifications such as mouse acceleration.

Availability

	Platform
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	982379
Specification	https://github.com
Chrome Status	Details
Stars	15

Web NFC aims to provide sites the ability to read and write to NFC tags when they are brought in close proximity to the user’s device (usually 5-10 cm, 2-4 inches). The current scope is limited to NDEF, a lightweight binary message format. Low-level I/O operations (e.g. ISO-DEP, NFC-A/B, NFC-F) and Host-based Card Emulation (HCE) are not supported within the current scope.

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	Negative
Other
Safari	Negative
Developers	Positive

Implementation Information

Tracking Bug	520391
Specification	https://w3c.github.io
Chrome Status	Details
Stars	80

Enables web applications to interact with human interface devices (HIDs) other than the standard supported devices (mice, keyboards, touchscreens, and gamepads). However, there are many other HID devices that are currently inaccessible to the web. This API allows web applications to request access to these devices, send and receive HID reports, and retrieve information about the report descriptor.

Availability

	Platform
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Harmful
Other
Safari	Negative
Developers	Strongly Positive

Implementation Information

Tracking Bug	890096
Specification	https://wicg.github.io
Chrome Status	Details
Stars	47

The Serial API provides an interface for connecting to serial devices, either through a serial port on the user’s system or removable USB and Bluetooth devices that emulate a serial port. This API has been requested by the hardware developer community, especially developers building educational tools, as a companion to the WebUSB API because operating systems require applications to communicate with USB-based serial ports using their higher-level serial API rather than the low-level USB API.

Availability

	Platform
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Negative
Other
Safari	Negative
Developers	Strongly Positive

Implementation Information

Tracking Bug	884928
Specification	https://wicg.github.io
Chrome Status	Details
Stars	67

An API for web applications to make use of advanced handwriting recognition services (e.g. those on operating systems) to recognize text from handwriting drawings (inks) in real time. In this context, handwriting drawing means the temporal and positional information used to describe a human handwriting process.

Availability

	Platform
	ChromeOS

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	1207667
Specification	https://wicg.github.io
Chrome Status	Details
Stars	5

This new API will help clients who are still using Chrome Apps to migrate to the Web, by using a simliar API to chrome.storage.managed Extensions API.

Availability

	Platform
	ChromeOS
	Linux
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	1141849
Specification	https://wicg.github.io
Chrome Status	Details
Stars	12

Provides a mechanism to allow users to configure a Progressive Web Application (PWA) to be launched automatically when a user logs in to the operating system.

Availability

	Platform
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	897302
Chrome Status	Details
Stars	37

Provides efficient, low-level access to built-in (software and hardware) media encoders and decoders.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Positive
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	897297
Specification	https://wicg.github.io
Chrome Status	Details
Stars	59

The Idle Detection API notifies developers when a user is idle, indicating such things as lack of interaction with the keyboard, mouse, screen, activation of a screensaver, locking of the screen, or moving to a different screen. A developer-defined threshold triggers the notification.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Harmful
Other
Safari	Negative
Developers	Positive

Implementation Information

Tracking Bug	878979
Specification	https://wicg.github.io
Chrome Status	Details
Stars	33

The EyeDropper API enables developers to use a browser-supplied eyedropper in the construction of custom color pickers.

Availability

	Platform
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	897309
Specification	https://wicg.github.io
Chrome Status	Details
Stars	25

Enable web applications to register themselves as handlers of custom URL protocols/schemes using their installation manifest.

Availability

	Platform
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	1019239
Specification	https://pr-preview.s3.amazonaws.com
Chrome Status	Details
Stars	46

WebTransport is a protocol framework that enables clients constrained by the Web security model to communicate with a remote server using a secure multiplexed transport.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Worth Prototyping
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	1011392
Specification	https://wicg.github.io
Chrome Status	Details
Stars	35

The HIDDevice forget() method allows web developers to voluntarily revoke a permission to a HIDDevice that was granted by a user.

Adds new screen information APIs and makes incremental improvements to existing window placement APIs, allowing web applications to offer compelling multi-screen experiences. The existing singular window.screen offers a limited view of available screen space, and window placement functions generally clamp bounds to the current screen. This feature unlocks modern multi-screen workspaces for web applications.

Availability

	Platform
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	897300
Specification	https://w3c.github.io
Chrome Status	Details
Stars	112

The NDEFReader makeReadOnly() method allows web developers to make NFC tags permanently read-only with Web NFC.

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	1275576
Specification	https://w3c.github.io
Chrome Status	Details
Stars	3

Make USBConfiguration, USBInterface, USBAlternateInterface, and USBEndpoint instances returned by the accessors on USBDevice === comparable.

Availability

	Platform
	ChromeOS

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	1274922
Chrome Status	Details
Stars	5

Following the recent HIDDevice forget() addition[1] to the web platform, the USBDevice forget() method allows web developers to voluntarily revoke a permission to a USBDevice that was granted by a user. [1] https://groups.google.com/a/chromium.org/g/blink-dev/c/Fk-IJF63UWc

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	1299351
Specification	https://wicg.github.io
Chrome Status	Details
Stars	2

When the window controls overlay is enabled for installed desktop web apps, the app's client area is extended to cover the entire window--including the title bar area--and the window control buttons (close, maximize/restore, minimize) are overlaid on top of the client area. The web app developer is responsible for drawing and input-handling for the entire window except for the window controls overlay.

Availability

	Platform
	ChromeOS
	Lacros
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	937121
Chrome Status	Details
Stars	51

File Handling provides a way for web applications to declare the ability to handle files with given MIME types and extensions. The web application will receive an event when the user intends to open a file with that web application.

Availability

	Platform
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	N/a
Other
Safari	N/a
Developers	Positive

Implementation Information

Tracking Bug	829689
Specification	https://wicg.github.io
Chrome Status	Details
Stars	79

Following the recent HIDDevice[1] and USBDevice[2] forget() additions to the web platform, the SerialPort forget() method allows web developers to voluntarily revoke a permission to a SerialPort that was granted by a user. [1] https://groups.google.com/a/chromium.org/g/blink-dev/c/Fk-IJF63UWc [2] https://groups.google.com/a/chromium.org/g/blink-dev/c/pSM2W0TtKEI/

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	1312010
Specification	https://wicg.github.io
Chrome Status	Details
Stars	1

Gives web applications the ability to enumerate local fonts and some metadata about each. Also gives web applications access to table data stored within local fonts, allowing those fonts to be rendered within their applications using custom text stacks.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Strongly Positive

Implementation Information

Tracking Bug	535764
Specification	https://wicg.github.io
Chrome Status	Details
Stars	65

Web Custom formats let websites read and write arbitrary unsanitized payloads using a standardized web custom format, as well as read and write a limited subset of OS-specific formats (for supporting legacy apps). The name of the clipboard format is mangled by the browser in a standardized way to indicate that the content is from the web, which allows native applications to opt-in to accepting the unsanitized content.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Positive
Other
Safari	Neutral
Developers	Positive

Implementation Information

Tracking Bug	106449
Specification	https://github.com
Chrome Status	Details
Stars	26

Enable the Origin Private File System (OPFS) part of File System Access API on Android. This includes all of the File System Access API surface, minus show*Picker() methods and Drag-and-Drop API integration. With FSA API on OPFS, a site can access its per-origin, private file system and are able to perform file operations via `FileSystemSyncAccessHandle` with improved performance. The original API, including both OPFS and non-OPFS, was shipped in M86 for desktop, and the extension with SyncAccessHandle was shipped in M102. https://chromestatus.com/feature/6284708426022912 https://chromestatus.com/feature/5702777582911488

Availability

	Platform
	Android

Consensus & Standardization

Browser	Status
Firefox	In Development
Other
Safari	In Development
Developers	Strongly Positive

Implementation Information

Tracking Bug	1354273
Specification	https://wicg.github.io
Chrome Status	Details
Stars	12

AudioContext.setSinkId sets the ID of the audio device to use for output. This allows the AudioContext to route audio to a connected output device of user's choosing.

Provides illuminance data to web pages via the AmbientLightSensor object and the "reading" event.

Availability

	Platform
	Android
	ChromeOS
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Harmful
Other
Safari	Negative
Developers	No Signals

Implementation Information

Tracking Bug	606766
Specification	http://w3c.github.io
Chrome Status	Details
Stars	28

Adds the showTrigger property to the Notification interface to enable showing a notification at a specific time in the future, even if the device is offline. Websites can use this to schedule notifications without using push messages.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	891339
Chrome Status	Details
Stars	71

Allow web app windows to have a tab strip. This adds a new display mode "tabbed" and a new manifest field to allow customizations to the tab strip.

Availability

	Platform
	ChromeOS
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	897314
Chrome Status	Details
Stars	59

The BluetoothDevice.watchAdvertisements() method will enable web apps to receive events when the system receives an advertisement packet from a watched device.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Negative
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	654897
Specification	https://webbluetoothcg.github.io
Chrome Status	Details
Stars	37

Chrome's implementation of Web Bluetooth does not have a way for websites to get a list of permitted devices. This feature adds the Bluetooth.getDevices() and BluetoothDevice.forget methods. getDevices() will return a list of BluetoothDevice objects that the current origin has been granted permission to use by the user. forget() will allow web developers to voluntarily revoke a permission to a BluetoothDevice that was granted by a user.

Availability

	Platform
	Android
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	Negative
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	577953
Specification	https://webbluetoothcg.github.io
Chrome Status	Details
Stars	36

Enables web applications to register as https URL handlers using their web app manifest.

Availability

	Platform
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	Positive

Implementation Information

Tracking Bug	1072058
Specification	https://github.com
Chrome Status	Details
Stars	34

Introduce additional ways for web applications to introspect and control their windows, to enable critical window management functionality on the web platform. This enhancement allows web applications to maximize, minimize, and restore their windows and introspect that window display state. Further, it allows applications to be notified when the window is repositioned, and control whether the window can be resized. The window placement permission will be required for these capabilities. https://github.com/ivansandrk/additional-windowing-controls/blob/main/awc-explainer.md

Availability

	Platform
	ChromeOS
	Linux
	Mac
	Windows

Consensus & Standardization

Browser	Status
Firefox	No Signal
Other
Safari	No Signal
Developers	No Signals

Implementation Information

Tracking Bug	1235296
Chrome Status	Details
Stars	38

Provides a way for websites to react to changes in the CPU pressure of the target device, such that websites can trade off resources for an improved user experience.

The WebSocket API provides a JavaScript interface to the RFC6455 WebSocket protocol. While it has served well, it is awkward from an ergonomics perspective and is missing the important feature of backpressure. The intent of the WebSocketStream API is to resolve these deficiencies by integrating streams with the WebSocket API.