Find and install add-ons to add features to Firefox | Firefox Help
Sep 19, 2025 · You can install different types of add-ons, such as extensions to add features to Firefox and themes to change its appearance. Learn more.
Using the Java plugin with Firefox - Mozilla Support
May 29, 2012 · Using the Java plugin with Firefox Created: 5/29/12 64% of users voted this helpful REDIRECT Use the Java plugin to view interactive content on websites Share this …
Unable to install add-ons (extensions or themes) | Firefox Help
Aug 19, 2025 · Firefox protects you against malware and browser hijackers by blocking third-party add-ons that are not digitally signed and verified by Mozilla. For more information, see Add-on …
Disable or remove Add-ons | Firefox Help - Mozilla Support
Jun 24, 2025 · Extensions and themes are types of add-ons for Firefox. This article describes how to disable and remove add-ons in Firefox.
Multi-Account Containers | Firefox Help - Mozilla Support
Oct 19, 2025 · Multi-Account Containers is an extension developed by Mozilla that allows you to separate your browsing experience into different color-coded tabs, to help protect your privacy. …
Add-ons finden und installieren und damit Funktionen zu Firefox ...
Jul 2, 2025 · Add-ons sind Programme, die zusätzliche Funktionen für Firefox bereitstellen. Sie können sich Add-ons holen, die Preisvergleiche vereinfachen, das Wetter anzeigen, das …
Why do Java, Silverlight, Adobe Acrobat and other plugins no …
Mar 7, 2017 · Since Firefox version 52 was released March 7, 2017, installed NPAPI plugins have not been supported in Firefox, except for Adobe Flash Player. Some of the plugins that no …
Re-enable add-ons that were disabled when updating Firefox
Jun 16, 2025 · Many add-ons are automatically compatible with the latest Firefox. For those that aren't, we'll show you how to search for new versions or find an alternative.
Manage your extensions using the extensions button in the …
Jul 22, 2025 · This article describes the new extensions button and how to manage your extensions and their permissions directly from the Firefox toolbar.
Add-ons deaktivieren oder deinstallieren | Hilfe zu Firefox
Jul 1, 2025 · Hinweis: In Firefox integriert sind die Plugins OpenH264 und Google Widevine, eine weitere Art von Add-ons. Informationen darüber erhalten Sie in den Artikeln Warum gibt es ein …