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Google Chrome Microsoft Edge Opera Samsung Internet Mozilla Firefox Apple Safari Spec
Engine Blink Gecko WebKit -
Layout API
(ExplainerDemos)

(Canary)
(Canary)
(Developer)
Spec
Paint API
(ExplainerDemosArticle)

(Chrome 65)
(Edge 79)
(Opera 52)
(Internet 9.2)
(Servo)
Spec
Parser API
(Explainer)
Properties & Values API
(DemosArticle)

(Chrome 78)
(Edge 79)
(Opera 65)
(Safari TP 67)
Spec
AnimationWorklet
(ExplainerDemosArticle)

(Chrome 71)
(Edge 79)
(Opera 58)
(Internet 10.2 Beta)
Spec
Typed OM
(ExplainerArticle)

(Chrome 66)
(Edge 79)
(Opera 53)
(Internet 9.2)
Spec
Font Metrics API
(Explainer)

Layout API in Google Chrome

Notes
“Experimental Web Platform features” on chrome://flags.

Layout API in Microsoft Edge

Notes
“Experimental Web Platform features” on edge://flags.

Layout API in Opera

Notes
“Experimental Web Platform features” on opera://flags.

Layout API in Samsung Internet

Layout API in Mozilla Firefox

Notes
Development status in Mozilla’s Bugzilla.

Layout API in Apple Safari

Paint API in Google Chrome

Version
Chrome 65. Release date: March 6, 2018
Notes
  • Feature on Chromestatus
  • Debugging (i.e. breakpoints) do not work.
  • No support for `paint()` arguments, due to the lack of support for Properties and Values API.

Paint API in Microsoft Edge

Version
Edge 79. Release date: January 15, 2020
Notes
  • Debugging (i.e. breakpoints) do not work.
  • No support for `paint()` arguments, due to the lack of support for Properties and Values API.

Paint API in Opera

Version
Opera 52. Release date: March 22, 2018
Notes
  • Debugging (i.e. breakpoints) do not work.
  • No support for `paint()` arguments, due to the lack of support for Properties and Values API.

Paint API in Samsung Internet

Version
Samsung Internet 9.2. Release date: February 18, 2019
Notes
  • Debugging (i.e. breakpoints) do not work.
  • No support for `paint()` arguments, due to the lack of support for Properties and Values API.

Paint API in Mozilla Firefox

Notes
Development status in Mozilla’s Bugzilla. Custom Paint is being experimented with in Servo.

Paint API in Apple Safari

Notes
Development status in WebKit’s status page.

Parser API in Google Chrome

Parser API in Microsoft Edge

Parser API in Opera

Parser API in Samsung Internet

Parser API in Mozilla Firefox

Parser API in Apple Safari

Properties & Values API in Google Chrome

Flags
Chrome 78. Release date: October 22, 2019
Notes
Feature on Chromestatus

Properties & Values API in Microsoft Edge

Flags
Edge 79. Release date: January 15, 2020

Properties & Values API in Opera

Flags
Opera 65. Release date: November 13, 2019

Properties & Values API in Samsung Internet

Properties & Values API in Mozilla Firefox

Notes
Development status in Mozilla’s Bugzilla.

Properties & Values API in Apple Safari

Flags
“Experimental features” in Develop menu
Notes
Development status in WebKit’s status page.
Still under development.

AnimationWorklet in Google Chrome

Notes
Feature on Chromestatus.

AnimationWorklet in Microsoft Edge

AnimationWorklet in Opera

AnimationWorklet in Samsung Internet

AnimationWorklet in Mozilla Firefox

AnimationWorklet in Apple Safari

Typed OM in Google Chrome

Version
Chrome 65. Release date: April 17, 2018
Notes

Typed OM in Microsoft Edge

Version
Edge 79. Release date: January 15, 2020
Notes
  • Only a subset of all CSS properties is supported

Typed OM in Opera

Version
Opera 53. Release date: May 10, 2018
Notes
  • Only a subset of all CSS properties is supported

Typed OM in Samsung Internet

Version
Samsung Internet 9.2. Release date: February 18, 2019
Notes
  • Only a subset of all CSS properties is supported

Typed OM in Mozilla Firefox

Notes
Development status in Mozilla’s Bugzilla.

Typed OM in Apple Safari

Notes
Development status in WebKit’s Bugzilla.

Font Metrics API in Google Chrome

Font Metrics API in Microsoft Edge

Font Metrics API in Opera

Font Metrics API in Samsung Internet

Font Metrics API in Mozilla Firefox

Font Metrics API in Apple Safari