Taming Firefox

Simple JavaScript switch

Create a bookmark for the following link;

  about:config?filter=javascript.enabled

You can do the same for any other preference.

Duplex printing

in 'about:config', search print.
Then:

Show scrollbars

Settings -> Browsing -> Always show scrollbars
And:
about:config -> search: widget.gtk.overlay-scrollbars.enabled -> False

Links

• About:config entries
• Firefox Help - Tutorials: Bookmarks
• Firefox Keyboard and Mouse Shortcuts
• Ad blocker roundup: 6 ad blockers to improve your internet experience
• At startup Firefox want to fetch http://detectportal.firefox.com/success.txt. You can disable this in the following way:
  Turn off captive portal
• Completely disable Data Reporting
• Force Firefox to use UTF for (local) text files:
  910192 - Get rid of intl.charset.default as a localizable pref and deduce the fallback from the locale
  Short version: View -> Text Encoding -> Auto-Detect -> Japanese
• Disable Firefox blocking of HTTP downloads
• How to Change or Fake Location in Chrome, Edge, and Firefox;
  Set 'geo.provider.network.url' to 'data:application/json,{"location": {"lat": d.dddd, "lng": d.dddd}, "accuracy": 27000.0}' where 'd.dddd' are coordinates.
• How to show the full URL in Firefox
  Short version: about:config -> Search: browser.urlbar.trimURLs -> false
• Mozilla's new DNS resolution is dangerous
• permissions.default.geo 0 and 1 and 2;
  1 Allow
  2 Deny
  3 Prompt
• how to deactivate search within address bar?
• How to completely disable website translation?
  Short version: about:config -> Search: browser.translations.automaticallyPopup -> false
• Saved telemetry pings, why?
• Trusted Recursive Resolver