Install Mozilla Firefox ESR (ca-valencia)

About Mozilla Firefox ESR (ca-valencia)

Get the Firefox Extended Support Release or Rapid Release browser for comprehensive data security and data protection.

What's new in 153.0.0

Version 153.0esr, first offered to ESR channel users on July 21, 2026 Firefox 153 Extended Support Release (ESR) includes all of the enhancements since Firefox 140, along with many new features to make your enterprise deployments easier and even more flexible. General - Firefox now includes a new profile management system that helps you separate your online life into distinct profiles for work, school, vacation planning, or whatever you choose. Profiles can be customized with names, avatars, and color themes while keeping tabs, bookmarks, passwords, and browsing history separate. Built-in profile backup and restore also makes it easier to migrate to a new device or recover your browsing data. - Split View lets you view two webpages side-by-side in a single browser window, with additional options to quickly open links in Split View, rearrange pages, and search open tabs. - The Firefox address bar has gained several new capabilities, including built-in unit and time zone conversion, quick actions such as muting all browser audio, and direct search results as you type. - Firefox now supports copying links directly to highlighted text on a webpage for easier sharing. - Firefox Settings has been redesigned with improved organization and navigation, making it easier to find and customize browser preferences. AI - Firefox introduced several new AI-powered features, including on-device tab organization, AI-assisted link previews, integrated AI search, and centralized controls for managing AI features. Whenever possible, these features perform processing locally to help protect user...

Read release notes

Version history