Firefox 110 for developers

This article provides information about the changes in Firefox 110 that will affect developers. Firefox 110 is the current Beta version of Firefox and will ship on February 14, 2023.

Changes for web developers

Developer Tools

HTML

Removals

CSS

  • Container queries and container query length units are now supported by default. For more information on these queries and the related units of length, see the CSS Container Queries documentation (bug 1809720).

Removals

JavaScript

Removals

SVG

Removals

HTTP

Removals

Security

Removals

APIs

DOM

Media, WebRTC, and Web Audio

Removals

WebAssembly

Removals

WebDriver conformance (WebDriver BiDi, Marionette)

WebDriver BiDi

Marionette

Changes for add-on developers

Removals

Other

Older versions