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Apple Safari Google Chrome Microsoft Edge Mozilla Firefox Opera
Layout API no signal intent no signal no signal no signal
Custom Paint API no signal partially (Canary) no signal intent (Servo) no signal
Parser API no signal no signal no signal no signal no signal
Properties & Values API no signal partially (Canary) no signal development no signal
AnimationWorklet no signal intent no signal no signal no signal
Typed OM intent partially (Canary) no signal intent no signal
Font Metrics API no signal no signal no signal no signal no signal

Layout API in Apple Safari

Layout API in Google Chrome

Notes
Chrome is aiming for a very basic version behind a flag Q4 2017/Q1 2018.

Layout API in Microsoft Edge

Layout API in Mozilla Firefox

Notes
Development status in Mozilla’s Bugzilla.

Layout API in Opera

Custom Paint API in Apple Safari

Custom Paint API in Google Chrome

Flags
“Experimental Web Platform features” on chrome://flags.
Notes
Still under development.

Custom Paint API in Microsoft Edge

Custom Paint API in Mozilla Firefox

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

Custom Paint API in Opera

Parser API in Apple Safari

Parser API in Google Chrome

Parser API in Microsoft Edge

Parser API in Mozilla Firefox

Parser API in Opera

Properties & Values API in Apple Safari

Properties & Values API in Google Chrome

Flags
“Experimental Web Platform features” on chrome://flags.
Notes
Still under development.

Properties & Values API in Microsoft Edge

Properties & Values API in Mozilla Firefox

Notes
Development status in Mozilla’s Bugzilla.

Properties & Values API in Opera

AnimationWorklet in Apple Safari

AnimationWorklet in Google Chrome

Notes
Development status on CrBug.

AnimationWorklet in Microsoft Edge

AnimationWorklet in Mozilla Firefox

AnimationWorklet in Opera

Typed OM in Apple Safari

Notes
Apple officially commited to Typed OM in a Houdini Task Force meeting in August 2017.

Typed OM in Google Chrome

Flags
“Experimental Web Platform features” on chrome://flags.
Notes
Still under development.

Typed OM in Microsoft Edge

Typed OM in Mozilla Firefox

Notes
Development status in Mozilla’s Bugzilla.

Typed OM in Opera

Font Metrics API in Apple Safari

Font Metrics API in Google Chrome

Font Metrics API in Microsoft Edge

Font Metrics API in Mozilla Firefox

Font Metrics API in Opera