So what languages are we talking about?

Lucky888 said

Most of time I write mixed language content so I have to constantly switch dictionaries and it's kinda annoying . Is there a way to use two dictionaries at the same time or just merge them in one ?

There is or was the option of using the "Dictionary Switcher" Extension. https://addons.mozilla.org/firefox/addon/dictionary-switcher/

I say was as it is not compatible with Firefox 57.0 and later Releases and you should not use a old vulnerable version just to use this.

WestEnd said

So what languages are we talking about?

English and Spanish. What do you have in mind?

James said

Lucky888 said

Most of time I write mixed language content so I have to constantly switch dictionaries and it's kinda annoying . Is there a way to use two dictionaries at the same time or just merge them in one ?

There is or was the option of using the "Dictionary Switcher" Extension. https://addons.mozilla.org/firefox/addon/dictionary-switcher/

I say was as it is not compatible with Firefox 57.0 and later Releases and you should not use a old vulnerable version just to use this.

Thank you. It's not supported in Quantum, however the extension seems to only operate in the language given by the context. So I guess ( and I'm just guessing) if I select a full page of mixed language text it won't work. Or would explode.

See also this bug (not much activity):

• bug 676500 - multi-dictionary spell checking

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