Firefox Preferences

user.js

/** Security ***/

// Firefox Strict Mode
user_pref("browser.contentblocking.category", "strict");

// Enable https only mode
user_pref("dom.security.https_only_mode", true);

// DNS over HTTPS
user_pref("network.trr.mode", 3);
user_pref("network.trr.uri", "https://mozilla.cloudflare-dns.com/dns-query");

/** Preference ***/

// Sort Ctrl+Tab by recently used order
user_pref("browser.ctrlTab.sortByRecentlyUsed", true);

// Open PDFs inline
user_pref("browser.download.open_pdf_attachments_inline", true);

// Show "Save as" menu on download
user_pref("browser.download.useDownloadDir", false);
user_pref("browser.download.always_ask_before_handling_new_types", true);

// Highlight all references on ctrl+F
user_pref("findbar.highlightAll", true);

// Disable search and form history
user_pref("browser.formfill.enable", false);

// Enable autoscrolling
user_pref("general.autoScroll", true);
 
// Disable bookmarks toolbar
user_pref("browser.toolbars.bookmarks.visibility", "never");

// Disable Firefox Password Manager
user_pref("signon.rememberSignons", false);

// KDE Filepicker
user_pref("widget.use-xdg-desktop-portal.file-picker", 1);

// Alt Click to save link as
user_pref("browser.altClickSave", true);

// userChrome
user_pref("toolkit.legacyUserProfileCustomizations.stylesheets", true);

/** Bloat ***/
user_pref("browser.newtabpage.activity-stream.feeds.topsites", false); 
user_pref("browser.newtabpage.activity-stream.feeds.section.topstories", false); 
user_pref("browser.urlbar.trending.featureGate", false); // Trending searches
user_pref("browser.urlbar.addons.featureGate", false); // Addon Suggestions