Firefox

Firefox 63 for developers

 

Draft
This page is not complete.

This article provides information about the changes in Firefox 63 that will affect developers. Firefox 63 is the current Nightly version of Firefox, and will ship on October 23, 2018.

Changes for web developers

Developer tools

No changes.

HTML

No changes.

CSS

No changes.

SVG

No changes.

JavaScript

No changes.

APIs

New APIs

No changes.

DOM

DOM events

No changes.

Service workers

No changes.

Media, Web Audio, and WebRTC

No changes.

Canvas and WebGL

  • A new powerPreference context attribute has been added to HTMLCanvasElement.getContext(). On MacOS, this allows WebGL non-performance-critical applications and applets to request the low-power GPU instead of the high-power GPU in multi-GPU systems (bug 1349799).

CSSOM

No changes.

HTTP

No changes.

Security

No changes.

Plugins

No changes.

Other

No changes.

Removals from the web platform

HTML

No changes.

CSS

No changes.

APIs

No changes.

SVG

No changes.

Other

No changes.

Changes for add-on and Mozilla developers

WebExtensions

  • A "search" API was added to retrieve the installed search engines.

See also

  • Site compatibility for Firefox 63

Older versions

 

 

 

Document Tags and Contributors

Tags: 
Contributors to this page: smile4ever, ziyunfei, fscholz, chrisdavidmills
Last updated by: smile4ever,