HTTPS Everywhere for Firefox: Complete Setup Guide & Features

Boost Your Browsing Security with HTTPS Everywhere for Firefox

When you type a web address into your browser, you expect your connection to be private. However, standard internet traffic historically traveled via unencrypted HTTP (Hypertext Transfer Protocol), leaving your personal information, passwords, and browsing history exposed to anyone snooping on your network. To combat this vulnerability, the ⁠Electronic Frontier Foundation (EFF) and the Tor Project created a legendary tool: the HTTPS Everywhere browser extension.

While the internet has evolved significantly, understanding the legacy of HTTPS Everywhere—and how its powerful security features are handled today—is essential for maximizing your security on Mozilla Firefox. What Was HTTPS Everywhere?

Originally launched in 2010, HTTPS Everywhere was a pioneering browser extension designed to protect users from mass surveillance, account hijacking, and “man-in-the-middle” attacks. The extension functioned through a few simple mechanisms:

Automatic Redirection: It seamlessly forced websites to load their secure, encrypted https:// version, even if you typed http:// or clicked an insecure link.

Rule-Based Upgrades: It maintained an extensive directory of major platforms (like Google, Wikipedia, and online banking sites) that supported encryption but didn’t always use it by default.

Traffic Blocking: Advanced users could turn on a strict toggle to entirely block unencrypted web traffic, ensuring no data leaked over an insecure connection. Why You No Longer Need the Extension

In January 2023, the EFF and the Tor Project officially retired and discontinued the HTTPS Everywhere extension.

This decision was not a failure—it was a declaration of victory. Thanks to global security initiatives, roughly 90% of all web traffic now utilizes modern encryption by default. More importantly, Mozilla Firefox now has the features of HTTPS Everywhere natively built into the core browser architecture, rendering the old third-party extension completely obsolete.

Using built-in browser tools instead of the legacy extension offers two primary benefits:

Fewer Background Processes: Native tools run faster and use fewer computer system resources.

Seamless Interface Integration: Error messages and warnings adapt to your active theme without breaking webpage layout. How to Enable Native “HTTPS-Only Mode” in Firefox

You do not need to download an extension to secure your browsing. You can replicate and upgrade the protection of HTTPS Everywhere right now by enabling Firefox’s HTTPS-Only Mode. Follow these steps to activate it:

Open Settings: Click the Menu button (three horizontal lines) in the top-right corner of Firefox and select Settings.

Navigate to Privacy & Security: Select the Firefox Privacy & Security tab on the left sidebar.

Scroll to the Bottom: Locate the section explicitly titled HTTPS-Only Mode. Choose Your Protection Level:

Select “Enable HTTPS-Only Mode in all windows” for comprehensive, ⁄₇ protection.

Select “Enable HTTPS-Only Mode in private windows only” if you prefer to limit the behavior to your private browsing sessions.

[Firefox Settings] ➔ [Privacy & Security] ➔ [HTTPS-Only Mode] ➔ [Enable in all windows] What Happens After Activation?