Firefox 113 for developers

This article provides information about the changes in Firefox 113 that affect developers. Firefox 113 is the current Beta version of Firefox and ships on May 09, 2023.

Changes for web developers

Developer Tools

HTML

Removals

CSS

Removals

JavaScript

Removals

SVG

Removals

HTTP

Removals

Security

Removals

APIs

CanvasRenderingContext2D.reset() and OffscreenCanvasRenderingContext2D.reset() are now supported, and can be used to return the associated rendering context to its default state. (Firefox bug 1709347).

DOM

Media, WebRTC, and Web Audio

The AV1 video codec is now enabled on Android. Hardware accelerated decoding is used if supported by the device (Firefox bug 1672276).

Removals

WebAssembly

Removals

WebDriver conformance (WebDriver BiDi, Marionette)

WebDriver BiDi

Marionette

Changes for add-on developers

When an extension registers multiple listeners for the same event, all the event listeners are called when the event page wakes up, instead of only the first one (Firefox bug 1798655).
Support is now provided for the declarativeNetRequest API (Firefox bug 1782685).

Removals

Other

Older versions