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Use tabs to organize lots of websites in a single window

Use tabs to organize lots of websites in a single window

By displaying a website in a tab, Firefox lets you have multiple websites open inside a single window. Learn the basics of using tabs.

Enable and disable cookies that websites use to track your preferences

Enable and disable cookies that websites use to track your preferences

Websites store things like your preferences, login status, and trackers in "cookies" on your computer. Learn how to manage cookies in Firefox.

View PDF files in Firefox or choose another viewer

View PDF files in Firefox or choose another viewer

You can view PDF files in Firefox with the built-in viewer. You can also choose a different viewer or set Firefox to always ask. Learn more.

Rate your Firefox experience, surveys and out of date messages (Heartbeat)

Rate your Firefox experience, surveys and out of date messages (Heartbeat)

You may be selected to rate Firefox or complete a survey. You may also see a notice to update Firefox. Learn more about these messages.