Firefox 64 for developers

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This article provides information about the changes in Firefox 64 that will affect developers. Firefox 64 is the current Nightly version of Firefox, and will ship on December 11, 2018.

Changes for web developers

Developer tools

No changes.

Removals

HTML

No changes.

Removals

CSS

No changes.

Removals

SVG

No changes.

Removals

JavaScript

Removals

APIs

No changes.

New APIs

DOM

DOM events

Service workers

Media, Web Audio, and WebRTC

Canvas and WebGL

Security

No changes.

Removals

Plugins

No changes.

Removals

Other

No changes.

Removals

Changes for add-on developers

API changes

Removals

Manifest changes

  • New pinned property of the page_action manifest key enables extensions to control whether their page actions should be pinned to the location bar on install or not (bug 1494135).
  • In native manifests on Windows, the 32-bit registry view (Wow6432Node) will be checked first for registry keys, followed by the "native" registry view; you should use whichever is appropriate for your application (bug 1494709).

Removals

See also

Older versions

Document Tags and Contributors

Contributors to this page: chrisdavidmills, ExE-Boss
Last updated by: chrisdavidmills,