This is the ultimate tool, if you don't want to look like a fool.

I love this app. Even on the free tier, my writing has improved so much!

Perfect!

Its a simple and easy way to improve and check your spelling errors and your grammar.

good

It's too slow. Is there a way to speed it up? I type my entire text/comment and it takes 5-10 seconds AFTER that to start showing the wrongly spelled words.

The red squiggly lines should appear IMMEDIATELY the moment I've made a spelling error. Grammatical ones can take time. But because of its slow speed I hardly ever notice my mistakes until I've posted my comment

Originally my rating was 5/5 stars; as of 08/06/26 I've now revised that to 1/5 Stars.

LanguageTool has genuinely been one of the most useful extensions and tools I've used in the past year or two. Sadly, the team has decided to lock the ENTIRE extension behind a paywall (with no "lite" or "freemium") version, I seriously can't even get the extension to pop up?? It's just not worth the price right now, but also I couldn't even pay them if I wanted to???

I wish they'd have taken a page out of the DeepL team's book and made it so LanguageTool was an available option for the Firefox Browser Sidebar. I can kind of understand locking the original functionality down, but now I have to have a whole separate tab open to their main desktop website if I want to use/check any part of it??? this whole update and functionality change is just... odd.

For the record: YES; I would actually consider paying for LanguageTool if the extension had more integration on Firefox and other platforms I'd love to use it on, like iOS*!

I do hope it see it improve at some point. The slow decline of LanguageTool makes me sad. I hope I can come back and edit this review to be more positive in the future. For now, I'll be looking for an alternative extension and recommend others do the same.


(*which I have my own gripes about.... mainly that giving LanguageTool my "full keyboard access" removes their non-Apple keyboard functionality of it Entirely for some reason? why does giving them Keyboard Access remove THE ENTIRE LANGUAGETOOL KEYBOARD? why does it get replaced with some shoddy, clunky, and laggy window that takes forever to spellcheck anything? This lack of truly integrated or easily accessible functions seems to be a pattern with LanguageTool right now and it does NOT help the "mandatory payment for our whole app/extension now" sting... sorry to sound harsh to a product i used to love but wow. it's disappointing)

Estou gostando muito, LT é rápido e muito inteligente!

Есть баги, которые сразу впервые заметил:
допустим пишу "привит", программа считает что правильно будет: "Привит", хотя на самом деле "Привет", а так спасибо за программу, очень крутое

La aplicacion ahora te obliga a pagar para su uso, denunciar y desinstalar.

я тупой , это расширение помогает мне не позориться

Very useful when running a local instance, I'm glad it supports running in my homelab versus on their server.

Totaler Mist was jetzt abläuft das man dafür bezahlen muss. Lasst doch die Leute bezahlen wenn sie zusätzliche KI Dienste haben wollen. Ich brauche das nicht aus diesem Grunde habe ich diese Erweiterung aus meinem Slimjet Browser (Chrome basiert) deinstalliert. Ich brauche nur Rechtschreibprüfung und Grammatikprüfung. Aus diesem sehe ich nicht ein extra zu zahlen für KI Dienste. Das eure Schwesterfirma eine kostenlose Alternative bereit hält ist gelogen. Wenn es auch in Firefox passiert werden ich die Die Rechtschreibprüfung und die Grammatikprüfung in Open Office machen. Ich arbeite dann mit Copy and Paste.

This is really helpful as I need to switch between a lot of websites, ad, to type quickly I make a lot of typos (i.e. Tqre or typr over type)

It's announced that the whole extension is going to be locked behind the Premium subscription. While I understand the need to make money, the costs are not reasonable for me and my usage. I also don't like your explanation that this is because of the rising costs of the AI-features, which I didn't need nor was convinced of to begin with.

You can circumvent this (for now?) if you set up your own server, but I think I prefer to part ways at this point.