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How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

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New Contributor

How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

If "Match Case" is used then Firefox is closed then reopened, then Find is selected, "Match Case" is still checked. If I forget to uncheck it, I do "Match Case" searches without knowing it's case sensitive.

9 REPLIES
Site Moderator

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

First, you need to update to a modern Firefox version. Update Firefox to the latest version. Your version is very old and unsafe.

After that, see if your Match Case is still checked Smiley Happy

New Contributor

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

Updated to 15.0 Still does the same thing. "Match Case" stays on its last setting, even after shutdown and restart.

Site Moderator

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

Do the options in an add-on like https://addons.mozilla.org/en-US/firefox/addon/find-toolbar-tweaks help any?

New Contributor

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

What does your version do? If you open Find (Ctrl+F) and check "Match Case" box, then close Firefox, then restart FireFox and hit (Ctrl+F), is the "Match Case" box still checked on yours?

Site Moderator

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

Start Firefox in Safe Mode to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance/Themes).

New Contributor

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

I have a related problem. I never want to use "Match case," so I never turn it on myself. However, sometimes I notice that it's turned on. I always turn it off when this happens, but eventually I notice that I'm not finding things and, sure enough, it's turned on again.

I've confirmed that the pref

   accessibility.typeaheadfind.casesensitive

is set to zero.

What I'd like to do is disable "Match case" entirely. Short of that, I'd like to know how it gets turned on (when I'm not doing it).

Site Moderator

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

You can create a file user.js in the Firefox Profile Folder to initialize that pref on each start of Firefox.

user_pref("accessibility.typeaheadfind.casesensitive", 1);

The customization file user.js is located Firefox profile folder.

You can use this button to go to the Firefox profile folder:

  • Help > Troubleshooting Information > Profile Directory: Show Folder

--- A more thorough way would be to lock the pref via a mozilla.cfg file.

lockPref("accessibility.typeaheadfind.casesensitive", 1);

You can use a mozilla.cfg file in the Firefox program folder to lock prefs or specify new (default) values.

Place a file local-settings.js in the defaults\pref folder where you also find the file channel-prefs.js to specify using mozilla.cfg.

pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0); // use this to disable the byte-shift

See:

You can use these functions in mozilla.cfg:

defaultPref();  // set new default value
pref();         // set pref, but allow changes in current session
lockPref();     // lock pref, disallow changes
New Contributor

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

All from Cor-el was a bust. None of it worked or made any difference at all. Don't know how to resolve.

Site Moderator

Re: How do I get the "Match Case" in "Find" (Ctrl+F) to Default to unchecked (case insensitive) instead on staying on its last setting?

You can try to reset Firefox.

If you reset Firefox then a new profile is created and some of your data (bookmarks, passwords, cookies, form data) is automatically imported and your current profile will be moved to the desktop (Old Firefox Data).

You can recover more data from the old profile (be cautious with doing that).