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 <p><strong>HTTPS</strong>: 4chan X currently shares your settings and post history between the HTTP and HTTPS versions of 4chan. If you are concerned about protecting your privacy against a man-in-the-middle attack, you should disable 4chan X on the HTTP version of 4chan and/or install <a href="https://www.eff.org/https-everywhere">HTTPS Everywhere</a>.</p>
 <h2 id="install">Install</h2>
 <input hidden type="checkbox" id="firefox-hide"><div><h3 id="firefox"><label for="firefox-hide">Firefox</label></h3>
-<p>Install <a href="https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/">Greasemonkey</a>, then <strong><a href="https://www.4chan-x.net/builds/4chan-X.user.js">click here to install 4chan X</a></strong>.</p>
+<p>You will first need to install a userscript manager such as <a href="https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/">Greasemonkey</a>. Unfortunately, Firefox's transition to WebExtensions has forced a complete rewrite of Greasemonkey, leaving the current version of Greasemonkey unmaintained and unreliable. Until the WebExtensions version of Greasemonkey is complete, your options are:</p>
+<ul>
+<li>Use <a href="https://www.mozilla.org/en-US/firefox/organizations/">Firefox ESR</a>, which should continue to work with the current version of <a href="https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/">Greasemonkey</a> until a new one is ready.</li>
+<li>Install <a href="https://addons.mozilla.org/en-US/firefox/addon/violentmonkey/">Violentmonkey</a> or <a href="https://addons.mozilla.org/en-US/firefox/addon/tampermonkey/">Tampermonkey</a>. These are already WebExtensions, but due to the current limitations of WebExtensions, they offer less functionality than Greasemonkey.</li>
+<li>Use <a href="https://addons.mozilla.org/en-US/firefox/addon/greasemonkey/">Greasemonkey</a> with the current version of Firefox, but don't be surprised when things break.</li>
+</ul>
+<p>After Greasemonkey or an alternative userscript manager is installed, <strong><a href="https://www.4chan-x.net/builds/4chan-X.user.js">click here to install 4chan X</a></strong>.</p>
 <p>Ports of Greasemonkey are available for <a href="https://sourceforge.net/projects/gmport/">SeaMonkey</a> and <a href="https://github.com/janekptacijarabaci/greasemonkey/releases/latest">Pale Moon</a>.</p>
 </div><input hidden type="checkbox" id="chromium-hide"><div><h3 id="chromium"><label for="chromium-hide">Chromium</label></h3>
 <p><strong>Userscript</strong>: Install Violentmonkey (<a href="https://addons.opera.com/en/extensions/details/violent-monkey/">Opera store</a> / <a href="https://chrome.google.com/webstore/detail/violent-monkey/jinjaccalgkegednnccohejagnlnfdag">Chrome store</a>) or <a href="https://tampermonkey.net/">Tampermonkey</a>, then <strong><a href="https://www.4chan-x.net/builds/4chan-X.user.js">click here to install 4chan X</a></strong>.</p>