Hi,

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Hi.

Settings you make via Options/Preferences are stored in prefs.js in the profile folder. You can open this file in an editor and copy the lines you need to another file like. a user.js file that you can use to initialize a profile. Best is not use the full file as there are a lot of settings that Firefox uses internally.

Thanks both, I realize this isn't the place for Mozilla to read (too bad, they'd learn a LOT), perhaps I should have asked if there was a way to do what I want.

Cor-El, thanks mucho, didn't know the settings were stored there.

Problem if I don't just use the same file, how can I make it easy to overwrite only the lines I want changed?

I use Textpad to edit all sorts of files and it shows the entries that are apparently changed with the true or false in blue in quotes at end of line, see attached clip.

Is the file parsed in order, and if I put duplicates in at the end, would they then alter anything previously set, do you know?

Hmmm, another thought. I could set up a dummy firefox sync account with the options to incorporate just add-ons and options, sign in with that account on a new installation so it sets everything up, then sign out/disconnect the system. Then use new account if wanted by the person actually using it.

Whatcha think?

Firefox will read a user.js file in the profile folder and use it to initialize prefs set in this file via user_pref("<pref name>", value) (i.e. it is similar to what is stored in prefs.js).

Note the user.js file is read each time Firefox is started and initializes preferences to the value specified in this file, so preferences set via user.js can only be changed temporarily for the current session. So you can use this user.js file once and remove it once done as you may forget what setting are in the file and get confused if you fail to change a specific setting.

See also 'User.js file overriding Firefox settings':

• https://support.mozilla.org/en-US/kb/how-to-fix-preferences-wont-save

Thanks!