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How can I set a permanent default language for Firefox's spellcheck feature, so that I don't have to keep manually selecting the spellcheck language I want?

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  • Last reply by cor-el

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I have a few languages installed, and Firefox's spellcheck seems to decide which language to use at random. So I have to keep manually selecting the language I want. 99% of the time I want English. So how can I set English as a permanent default language, and leave the manual selection for those infrequent occasions when I want another language spellchecked?

I have a few languages installed, and Firefox's spellcheck seems to decide which language to use ''at random''. So I have to keep manually selecting the language I want. 99% of the time I want English. So how can I set English as a permanent default language, and leave the manual selection for those infrequent occasions when I want another language spellchecked?

Modified by ColeMitchell

All Replies (2)

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I'm bumping this.

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Firefox should store the last used dictionary in the spellchecker.dictionary pref that you can check on the about:config page.

If you do not keep changes after a restart then see:


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

  • Do not click the Reset button on the Safe mode start window or otherwise make changes.