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Are browser settings synchronized (about:config) ?

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I am switching to another operating system, which means I will reinstall the browser. Based on this, the question arises: are the settings synchronized out about:config? I set up my browser for a very long time, I would not want to lose my work. If the data does not sync, where can I copy the browser settings?

I am switching to another operating system, which means I will reinstall the browser. Based on this, the question arises: are the settings synchronized out about:config? I set up my browser for a very long time, I would not want to lose my work. If the data does not sync, where can I copy the browser settings?

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Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:68.0) Gecko/20100101 Firefox/68.0

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TyDraniu
  • Top 25 Contributor
339 solutions 1907 answers

Chosen Solution

Hi Faurazeko.

Some preferences are synced, but not all of them. See Sync custom preferences.

You may also be interested in Profiles - Where Firefox stores your bookmarks, passwords and other user data and Back up and restore information in Firefox profiles.

Hi Faurazeko. Some preferences are synced, but not all of them. See [[Sync custom preferences]]. You may also be interested in [[Profiles - Where Firefox stores your bookmarks, passwords and other user data]] and [[Back up and restore information in Firefox profiles]].

Modified by TyDraniu

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Question owner

OK got it. Then where can I copy all the settings of my browser?

OK got it. Then where can I copy all the settings of my browser?
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TyDraniu
  • Top 25 Contributor
339 solutions 1907 answers

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Why don't you just copy the whole Profile instead only settings?

Why don't you just copy the whole Profile instead only settings?
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Question owner

I mean, where is the file with the browser settings?

I mean, where is the file with the browser settings?
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Question owner

Not sure if all settings are copied. You yourself said that not all settings can be synchronized.

Not sure if all settings are copied. You yourself said that not all settings can be synchronized.
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Senali Madawala
  • Top 25 Contributor
2 solutions 158 answers

First, open the about:config page. Accept the warning twhen you’re prompted. Note down the preference that you want to sync i.e. right-click it and select Copy name from the context menu. Next, right click again and select New>Boolean. n the preference name field, enter the following;

services.sync.prefs.setting

Replace ‘setting’ with the name of the preference you copied earlier. For example, if you want to sync the accessibility.blockautorefresh preference, you should name the new boolean preference as follows;

services.sync.prefs.accessibility.blockautorefresh

In the value field, set the value to True. That’s all you need to do. Once you add this preference, the preference with the corresponding name will sync across all instances of Firefox desktop. If there’s a preference that is available on Firefox Android, and you have sync enabled on it, it will sync to your phone as well.

First, open the about:config page. Accept the warning twhen you’re prompted. Note down the preference that you want to sync i.e. right-click it and select Copy name from the context menu. Next, right click again and select New>Boolean. n the preference name field, enter the following; services.sync.prefs.setting Replace ‘setting’ with the name of the preference you copied earlier. For example, if you want to sync the accessibility.blockautorefresh preference, you should name the new boolean preference as follows; services.sync.prefs.accessibility.blockautorefresh In the value field, set the value to True. That’s all you need to do. Once you add this preference, the preference with the corresponding name will sync across all instances of Firefox desktop. If there’s a preference that is available on Firefox Android, and you have sync enabled on it, it will sync to your phone as well.
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cor-el
  • Top 10 Contributor
  • Moderator
17587 solutions 159102 answers

If you copy a whole profile from Windows to another OS like Linux or Mac then you should be cautious because some files aren't compatible (absolute paths). Best is to copy only important data files and redo settings and reinstall extensions to make sure everything is initialized properly.

You can copy files like these with Firefox closed to the current profile folder to recover or transfer specific data.

  • bookmarks and history: places.sqlite
  • bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
  • cookies.sqlite for the Cookies
  • formhistory.sqlite for saved autocomplete Form Data
  • logins.json (passwords) and key4.db (58+) or key3.db (57 and older) (decryption key) for Passwords saved in the Password Manager
    if you only have key3.db then make sure to remove an existing key4.db
  • cert9.db (58+) or cert8.db (57 and older) for (intermediate) certificates stored in the Certificate Manager
    if you only have cert8.db then make sure to remove an existing cert9.db
  • persdict.dat for words you added to the spelling checker dictionary
  • permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
  • sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)
If you copy a whole profile from Windows to another OS like Linux or Mac then you should be cautious because some files aren't compatible (absolute paths). Best is to copy only important data files and redo settings and reinstall extensions to make sure everything is initialized properly. You can copy files like these with Firefox closed to the current profile folder to recover or transfer specific data. *https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile *bookmarks and history: places.sqlite *bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder *cookies.sqlite for the Cookies *formhistory.sqlite for saved autocomplete Form Data *logins.json (passwords) and key4.db (58+) or key3.db (57 and older) (decryption key) for Passwords saved in the Password Manager<br>if you only have key3.db then make sure to remove an existing key4.db *cert9.db (58+) or cert8.db (57 and older) for (intermediate) certificates stored in the Certificate Manager<br>if you only have cert8.db then make sure to remove an existing cert9.db *persdict.dat for words you added to the spelling checker dictionary *permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences) *sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)
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