Go Private Quickly for Firefox

What it does

Standard Private Window — click the toolbar icon, click the button, and a Firefox Private Browsing window opens. That's the core idea.
Open Hardened Private Window — the same one-click private window, plus extra privacy hardening where the browser allows it (on Firefox these settings report as “Unavailable” — see below).
State-aware icon — the toolbar mask is vivid in a normal window and goes muted silver when you're focused on a private (secure) one.

Works on

FirefoxWin · Mac · Linux

Firefox ESRWin · Mac · Linux

About Hardened Mode on Firefox

On Chromium browsers, GPQ's Hardened Private Mode can confine extra privacy settings to a single private session. Firefox doesn't offer a private-session scope for those settings, so — rather than silently change your normal browsing — GPQ reports each hardening protection as “Unavailable” and leaves your global Firefox settings untouched. The one-click private window works fully; the extra hardening is Chromium-only for now.

How to install

Open the Firefox Add-ons (AMO) listing.
Click Add to Firefox, then confirm.
A welcome page opens. Follow the one-time step: about:addons → Go Private Quickly → Details → Run in Private Windows: Allow.
Click the toolbar icon and choose Standard Private Window or Open Hardened Private Window.

Now live on Firefox Add-ons — addons.mozilla.org/addon/go-private-quickly.

What it is not

GPQ is a convenience tool, not anonymity. It is not a VPN, it does not hide your IP, and it does not block ads or trackers (pair it with uBlock Origin or Firefox's Enhanced Tracking Protection). Files you download during private browsing stay on your computer after the window closes. See the full privacy policy.