Firefox 111 for developers

This article provides information about the changes in Firefox 111 that affect developers. Firefox 111 is the current Nightly version of Firefox and ships on March 14, 2023.

Changes for web developers

Developer Tools

HTML

Removals

CSS

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

  • matchDiacritics has been added to the Find.find API. This option enables searches to distinguish between accented letters and their base letters. For example, when set to true, searching for "résumé" does not find a match for "resume" (bug 1680606)

Removals

Other

Older versions