Firefox 70 for developers

This article provides information about the changes in Firefox 70 that will affect developers. Firefox 70 is the current Nightly version of Firefox, and will ship on October 22, 2019.

• An information icon will be displayed next CSS properties that do not have an effect on the current element in the Rules pane of the Page Inspector (bug 1306054).

Removals

No changes.

 Removals

• [fill-stroke] [filter-effects] [css-color] percentage opacity. bug 1562086
• [css-grid] grid-auto-columns/rows should accept multiple track-size values. bug 1339672
• [css-text-decor-4] Implement text-decoration-skip-ink. bug 1411922
• [css-display-3] Implement multi-keyword display values. (bug 1038294, bug 1105868 and bug 1557825)

Removals

No changes.

Removals

• Add support for numeric separators. bug 1435818

Removals

New APIs

DOM

• Add DOMMatrix, DOMPoint, etc. support in web workers (bug 1420580).

DOM events

Service workers

Media, Web Audio, and WebRTC

Canvas and WebGL

Removals

No changes.

Removals

No changes.

Removals

No changes.

Removals

No changes.

Removals

No changes.

Removals

• Site compatibility for Firefox 70