Firefox 112 for developers

This article provides information about the changes in Firefox 112 that affect developers. Firefox 112 is the current Beta version of Firefox and ships on April 11, 2023.

Changes for web developers

Developer Tools

HTML

Removals

CSS

Removals

JavaScript

Removals

SVG

Removals

HTTP

Removals

Security

Removals

APIs

navigator.getAutoplayPolicy() is now supported, allowing developers to configure autoplay of media elements and audio contexts based on whether autoplay is allowed, disallowed, or only allowed if the audio is muted. See Firefox bug 1773551 for more details.
Rounded rectangles can now be drawn in 2D canvases using CanvasRenderingContext2D.roundRect(), Path2D.roundRect() and OffscreenCanvasRenderingContext2D.roundRect(). See Firefox bug 1756175 for more details.

DOM

Media, WebRTC, and Web Audio

Removals

WebAssembly

Removals

WebDriver conformance (WebDriver BiDi, Marionette)

WebDriver BiDi

Marionette

Changes for add-on developers

The properties usedDelegatedCredentials, usedEch, usedOcsp, and usedPrivateDns have been added to webRequest.SecurityInfo. These properties provide information about the security of the connection used for a web request (Firefox bug 1804460).
The property "type" is supported in the "background" manifest key. Setting this key to "module" loads background scripts specified with "scripts" as ES modules, avoiding the need to switch to background pages to use ES modules (Firefox bug 1811443).

Removals

Other

Older versions