Been looking at various settings changes you can make in the
“about:config” page in Firefox. Here are a couple I have found useful:
* keyword.enabled -- set to false to stop Firefox trying to
do a search on the contents of the address box if it doesn’t match
a URL. This is why I have a search box separate from the address
* browser.fixup.alternate.enabled -- set to false to stop it
helpfully tacking on “www.” and “.com” if the original URL you type
doesn’t work. I have occasionally been confused by it complaining
about not finding a URL, but showing a different one from the one I
By the way, when you first try to view this page, Firefox shows you a
warning to ensure you understand the consequences of messing
about with settings at this level. It remembers it has shown you this
warning by adding the following line to the prefs.js file in your
Firefox seems to overwrite this file when it quits, and reloads it when
it is launched again.
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My favourite Firefox Tweak from using about:config is the parameter:
I change this from from 3 to 20
For days on end I often have about 20 Firefox Windows open and each with about 10 to 20
With browser.sessionstore.max_windows_undo set to its default of three, if I crash or need
to reboot, then on restarting I can only get three previous Firefox windows to re-open.
The other 17 are not available.
After a reboot I launch Firefox and because I have...
Settings--> Preferences--> General--> Startup--> Restore previous session
One Firefox window opens with its previous tabs available. On the Firefox menu bar I then
History--> Recently closed Windows-->
...which will show my recently closed windows. This is where I click on "Restore all
Windows" and get the other 19 x previous Firefox Windows and their tabs to open.
Another little tweak I just did: turning off the “picture-in-picture”
Why? Because it just got a little bit too annoying. The way things are
positioned on a YouTube page, if I go to the bell icon to look at
notifications and try to click on a comment thread to expand it, that
click seems to be at exactly the right (wrong) place to trigger the
picture-in-picture feature on the currently-showing video. Which I
would rather watch in its allocated place, if you don’t mind.