Mozilla Firefox 52

Mozilla Firefox is a fast, full-featured Web browser. Firefox includes pop-up blocking, tab-browsing, integrated Google search, simplified privacy controls, a streamlined browser window that shows a number of additional features that work with you to help you get.

Firefox for Android

Web browser for Android smartphones and tablets

Firefox for iOS

Firefox 52.7 2018-01-22 Firefox 60: Firefox 59 2018-01-23 Firefox 58 Firefox 52.6 2017-11-13 Firefox 59: Firefox 58 2017-11-14 Firefox 57 Firefox 52.5 2017-09-21 Firefox 58: Firefox 57 2017-09-28 Firefox 56 Firefox 52.4 2017-08-02 Firefox 57: Firefox 56 2017-08-08 Firefox 55 Firefox 52.3 2017-06-12 Firefox 56: Firefox 55 2017-06-13 Firefox 54.
Gather in this interactive, online, multi-dimensional social space. Firefox Developer Edition. Get the Firefox browser built just for developers. Check out the home for web developer resources. Firefox Reality. Explore the web with the Firefox browser for virtual reality.

Firefox for iPhone, iPad and iPod touch devices

Firefox for Enterprise

Firefox Quantum for businesses

Firefox Lite

Mobile browser for Indonesia, India, The Philippines, and Thailand

Firefox Reality

Web browser for virtual reality headsets

Mozilla VPN

VPN for Windows 10, Mac, Linux, Android, and iOS devices

Firefox Private Network

Browse securely on public Wi-Fi using a Firefox add-on.

Firefox Lockwise

Mobile app that gives you access to passwords you've saved to Firefox.

Hubs

Virtual 3D meeting spaces for collaborating with friends, family, and colleagues on your browser or VR headset

Firefox for Amazon Devices

Browser for Amazon devices

Thunderbird

Email software for Windows, Mac and Linux

Firefox Focus

Automatic privacy browser and content blocker

Firefox options, preferences and settings

The Options/Preferences panels give you access to Firefox settings. This article describes what types of settings are available in each panel.

Common Myths about Private Browsing

Learn more about common misconceptions about Private Browsing in Firefox.

Enhanced Tracking Protection in Firefox for desktop

Enhanced Tracking Protection in Firefox automatically protects your privacy while you browse.

Update Firefox to the latest release

Firefox automatically updates itself by default but you can always do a manual update. Learn how to update Firefox on Windows, Mac or Linux.

Join Our Community

Grow and share your expertise with others. Answer questions and improve our knowledge base.

Plugins are a security and performance problem for Firefox users. NPAPI plugins are an obsolete technology, and Mozilla has been moving toward a Web which doesn't need plugins. The last remaining NPAPI plugin, Adobe Flash, has announced an end-of-life plan. To support the transition away from Flash, Firefox is working with other browsers to progressively and carefully make Flash usage less common. Below is the roadmap of past and future support for plugins in Firefox.

Schedule

June 2016

Starting with Firefox 47 in June 2016, all plugins other than Adobe Flash are click-to-activate. Users choose which sites are allowed to activate each plugin. In addition, the 64-bit version of Firefox for Windows only supports the Flash plugin.

March 2017

Starting with Firefox 52 in March 2017, plugins other than Adobe Flash are no longer supported in Firefox. Firefox Extended Support Release 52 continued to support non-Flash plugins until mid-2018.

August 2017

Starting with Firefox 55 in August 2017, users must choose which sites are allowed to activate the Flash plugin. Users will have the choice to remember the Flash setting per-site. This change was rolled out progressively during August and September 2017.

In order to improve security and performance, Mozilla will maintain a list of sites which cannot use any plugins.

September 2017

Starting with Firefox 56 in September 2017, Firefox for Android removed all support for plugins (bug 1381916).

2019

In September 2019, Firefox 69 removed the 'Always Activate' Flash option so Firefox always asks for the user's permission before activating Flash on a website.

2021

In January 2021, Firefox 85 was the first Firefox version to ship without Flash support. Firefox now has new behavior when an attempt is made to embed an external object using the <object> or <embed> elements:

If the element lists a MIME type other than x-shockwave-flash or x-test then the behavior is unchanged. This means that non-plugin types behave as expected and unknown types are displayed at a size of 0 x 0.
If an <object> element has an HTML fallback in the DOM then the fallback is shown as expected.
For x-shockwave-flash or x-test types, the element is shown as a transparent region with the size specified in its width and height attributes.

See also End of support for Adobe Flash.