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Firefox

Firefox 56 for developers

This article provides information about the changes in Firefox 56 that will affect developers. Firefox 56 is the current Beta version of Firefox, and will ship on September 26, 2017.

Changes for Web developers

Developer Tools

No changes.

HTML

CSS

SVG

No changes.

JavaScript

APIs

New APIs

No changes.

DOM

DOM events

WebRTC

Security

No changes.

Plugins

No changes.

Other

Removals from the web platform

HTML

APIs

SVG

No changes.

Changes for add-on and Mozilla developers

WebExtensions

No changes.

See also

Older versions

Document Tags and Contributors

 Contributors to this page: Sheppy, chrisdavidmills, fscholz, Bzbarsky, myakura, Sebastianz
 Last updated by: Sheppy,