Look what I just found with Firefox.

maxseven said:

FWIW I used to fiddle with add-ons & plugins a lot but since I just let FF auto-update things I've not had a lick of trouble, so am glad to just let it do its thing.

I see your reasoning. :)

Some of us prefer to create more than one profile - say the default profile plus a couple of tweaked profiles that can be used as and when needed. Along with profile backups that can be restored or elements of them that can be selectively restored in the event of any issues - profile elements can even be selectively restored after a clean install of Firefox if it decides to act up.

In my case, I just manually backup important aspects of the browser, in fact, you can even create a user.js file to quicly restore any settings you changed, even those in about:config.

In case anyone wonders what to backup, here is my list:

key3.db (stored passwords encryption key, in case you use master password)
logins.json (stored passwords)
places.sqlite (bookmarks)
user.js (your customized prefs) or prefs.js (your main changed prefs)
chrome folder with userContent.css and a JPEG (This is just me, I just customized my about:tabs page with a background, adaptive tiles that stretch to almost any screen resolution and other effects)

prefs.js is best for a quick backup and restore, while user.js is good for editing and setting only the prefferences you want restored, for example, here is mine:

Code:

user_pref("beacon.enabled", false);
user_pref("browser.customizemode.tip0.shown", true);
user_pref("browser.download.lastDir", "D:\\Users\\FerchogtX\\Downloads");
user_pref("browser.download.panel.shown", true);
user_pref("browser.download.useDownloadDir", false);
user_pref("browser.startup.homepage", "about:newtab");
user_pref("browser.tabs.remote.autostart", true);
user_pref("browser.taskbar.previews.enable", true);
user_pref("browser.uiCustomization.state", "{\"placements\":{\"PanelUI-contents\":[\"edit-controls\",\"zoom-controls\",\"new-window-button\",\"privatebrowsing-button\",\"save-page-button\",\"print-button\",\"history-panelmenu\",\"fullscreen-button\",\"find-button\",\"preferences-button\",\"add-ons-button\",\"developer-button\",\"ublock0-button\"],\"addon-bar\":[\"addonbar-closebutton\",\"status-bar\"],\"PersonalToolbar\":[\"personal-bookmarks\"],\"nav-bar\":[\"urlbar-container\",\"search-container\",\"bookmarks-menu-button\",\"pocket-button\",\"downloads-button\",\"home-button\",\"loop-button\"],\"TabsToolbar\":[\"tabbrowser-tabs\",\"new-tab-button\",\"alltabs-button\"],\"toolbar-menubar\":[\"menubar-items\"]},\"seen\":[\"ublock0-button\"],\"dirtyAreaCache\":[\"PersonalToolbar\",\"nav-bar\",\"TabsToolbar\",\"toolbar-menubar\",\"PanelUI-contents\",\"addon-bar\"],\"currentVersion\":4,\"newElementCount\":0}");
user_pref("browser.urlbar.suggest.searches", true);
user_pref("devtools.responsiveUI.currentPreset", "320x480");
user_pref("devtools.responsiveUI.customHeight", 160);
user_pref("devtools.responsiveUI.customWidth", 240);
user_pref("devtools.responsiveUI.rotate", false);
user_pref("devtools.telemetry.tools.opened.version", "{\"DEVTOOLS_TOOLBOX_OPENED_PER_USER_FLAG\":\"43.0.4\",\"DEVTOOLS_OS_ENUMERATED_PER_USER\":\"43.0.4\",\"DEVTOOLS_OS_IS_64_BITS_PER_USER\":\"43.0.4\",\"DEVTOOLS_SCREEN_RESOLUTION_ENUMERATED_PER_USER\":\"43.0.4\",\"DEVTOOLS_INSPECTOR_OPENED_PER_USER_FLAG\":\"43.0.4\",\"DEVTOOLS_RULEVIEW_OPENED_PER_USER_FLAG\":\"43.0.4\",\"DEVTOOLS_OPTIONS_OPENED_PER_USER_FLAG\":\"42.0\",\"DEVTOOLS_RESPONSIVE_OPENED_PER_USER_FLAG\":\"43.0.1\",\"DEVTOOLS_COMPUTEDVIEW_OPENED_PER_USER_FLAG\":\"43.0.4\",\"DEVTOOLS_STYLEEDITOR_OPENED_PER_USER_FLAG\":\"43.0.4\",\"DEVTOOLS_JSDEBUGGER_OPENED_PER_USER_FLAG\":\"43.0.4\"}");
user_pref("devtools.theme", "dark");
user_pref("devtools.toolbox.host", "window");
user_pref("devtools.toolbox.previousHost", "bottom");
user_pref("devtools.toolbox.selectedTool", "inspector");
user_pref("devtools.toolsidebar-width.inspector", 0);
user_pref("dom.ipc.plugins.flash.disable-protected-mode", true);
user_pref("general.smoothScroll", false);
user_pref("layers.async-pan-zoom.enabled", true);
user_pref("layers.offmainthreadcomposition.testing.enabled", true);
user_pref("layout.spellcheckDefault", 0);
user_pref("privacy.donottrackheader.enabled", true);
user_pref("privacy.trackingprotection.enabled", true);

Also, when you want to restore a Profile, first create the folder (either in the default %appdata% location, or a custom one, you can make Firefox to point to that place later with the switch -profilemanager) then you place this files before doing a new profile (so that passwords don't get reseted), then you create your profile, Firefox will start with all your settings restored.

In my case, I also enable experimental features, like Electrolisys, so I just leave this as an example, pretty much.

FerchogtX said:

In my case, I just manually backup important aspects of the browser, in fact, you can even create a user.js file to quicly restore any settings you changed, even those in about:config.

You might be interested in ConfigFox. Works with FF and variants - just point it at the profile.

Worths a try, thanks for this finding Call!