The ultimate Firefox configuration that is acceptable Privacy-Wise while being as much feature-packed as possible.

• The best Firefox configuration that break as little websites as possible
• No ads, no cookies messages not even the "forced" one
• Tons of new features thanks to amazing add-ons
• Only Free and Open Source add-ons, absolutely nothing proprietary is required
• 100% Free of spyware
• No Contributor License Agreement
• No Code of Conduct

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• LibreWolf

New Windows and Tabs

"Homepage and new windows" - "Custom URLs..."

Set the SearX instance you want to use.

Go to the SearX instance you want to use

Right click the search bar - Click "Add [Instance name]"

Go back to about:preferences#search

"Search Suggestions" tick all options

"One-Click Search Engine" - Remove everything except the SearX instance you added

Under "Cookies and Site Data" untick "Delete cookies and site data when LibreWolf is closed"

"History"

"Firefox will" "Use custom settings for history"

"Clear history when Firefox closes" - Tick everything except "Cookies" "Active Logins" "Site Settings" "Offline website data"

Set privacy.resistFingerprinting to false: it breaks to much stuff, and the browser add-ons do most of what it does.

Set browser.tabs.closeWindowWithLastTab to false: doesn't close the browser when the last tab is closed

Set security.OCSP.require to false: the OCSP server are down almost daily, and OCSP is basically pointless

In the hamburger menu:

Bookmarks - Show Bookmarks Toolbar

Right click the "Import bookmarks" - Remove from toolbar

Convenient settings

Home: Dark

Profile: "Random Profile (Desktop)" on desktop - "Random Profile (Mobile)" on mobile

Change Periodically - Every 30 minutes

"Auto-clean enabled" = Green

"Notification" = Red

Whitelist the websites you want to stay connected to.

"Encrypt All Sites Eligible" - ON

Enable BreezeWiki, choose your preferred instance

Configure it how you prefer

Notification - Un-tick "Enable popup"

Settings - Privacy

Appearance:

Theme: Dark

Filter lists

Tick the "+" next to "XX networks filters + XX cosmetic filters from:"

Tick every list (except the 2 "Fanboy's" lists, that break too much stuff)

"Apply changes" - "Update now"

Popup:

Click *

All css/image/frame without any filter - scripts disabled

1st-party frame without any filter

Miscellaneous: Support 3rd Party YouTube-Sites

Add your instance to "Add 3rd-Party Client Instance"

Go to new tab - Keep changes

Settings - Show a new photo - Every 5 minutes

Remove Greeting

Options: Enable Crowd Bypass

File name:

Template: aaaSingleFileZ/{year-utc}{month-utc}/{year-utc}{month-utc}{day-utc} - {page-title}.html

File name conflict resolution: skip duplicate file

HTML Content:

Tick "Remove frames"

Auto-Save

auto-save waiting delay after page load (s): 10 sec

Misc.

Tick "set maximum size for embedded resources"

maximum size (MB): 50MB

Auto-settings rules:

file://
moz-extension://

Right click SingleFileZ in the taskbar: Auto-save - Auto-save all tabs

You now have the best possible Firefox configuration.

If you think something more should be added, like an open source add-ons, feel free to open an issue.