This plugin used to work, but it seems to be unmaintained since 2023.

For me, it caused problems on notion.so, leading to thousands of warnings and a huge memory leak. For anyone looking for a reason why Notion may be unbearably slow and produce these warnings, disabling this extension may the the solution.

This is Notion's warning when this extension is enabled:

NOTION WARNING Reverting mutation of attribute lang from "null" -> "en" in component undefined
MutationRecord { type: "attributes", target: div.notranslate, addedNodes: NodeList [], removedNodes: NodeList [], previousSibling: null, nextSibling: null, attributeName: "lang", attributeNamespace: null, oldValue: null }

This is one of the most underrated addons here and it must be included in Firefox as native solution for horrible multi language spellchecking they currently have.

I dont understand why this addon fails to autocorrect words as you type. Whats the point to it?

Oh my god this works so damn well! I have been so annoyed by constantly having to manually switch between spell-check languages for so long, but never found this add-on before.

Thanks so much for this great Add-On Jacob! :-)

Always fallback to English when typing in Indonesia in Old reddit text area.

I can't get this to work. I have played with if for a half an hour but it doesn't do anything. Same on all pages i have tried. I REALLY want it to do so....

EDIT: I got my self a new computer and installed FF on it, and all old add-ons came with it. And now this work... One have to write a few words before it switches, but good enough. Thanks. Now it gets 5 stars

EDIT-2: This Add-one only works sometime, and very often NOT... SO im back giving it 3 stars only

EDIT-3: It almost NEVER work now.... Ill give it 2 stars now as it almost useless... How can it work worse over time???

EDIT-4 It stopped working and i tried to uninstall and install it again to no avail. So i give it 1 star now

Very useful add-on.
Thanks.

thank you

Can't seem to make it work on Firefox 71.0. Restarted several times and played around manually with the dictionaries no success to get the automation on. What I get wrong?

Hallelujah, praise the Lord! I've been waiting for this OBVIOUS feature since day 1 of using Firefox about 15 years ago.

The main downside is identification of the entire text field, rather than individual sentences. Consequently, it's not possible to spell-check more than one language in each text field, even when separated to distinct paragraphs.

I had to restart FF v68 two times and play with spell checking languages manually until it finally switched automatically in Gmail ! Working fine so far :-) Thanks !

After just a few testing, it looks like it works fine.