Grammar and Spell Checker - LanguageTool
With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.
Manifest V3
Rating: 4.69
19 new ratings
(4,362)
Weekly download count: 8,096
Firefox on Android: No
Permissions:
- activeTab
- storage
- contextMenus
- alarms
Size: 13.44M
URLs: Website ,Privacy policy
Full description: See detailed description
Source: Firefox Browser Add-ons
Updated: a day ago
Ranking
# 47 ▲ 1
Other platforms
User reviews
Pros
- Works well for catching errors, typos, and misspellings
- Fast and accurate corrections
- Supports several languages with automatic recognition
- Cost-effective and less intrusive compared to other options
Cons
- Lacks support for the Czech language
- Recent updates have caused issues with corrections, including deletion of spaces and punctuation
Most mentioned
- Performance issues in the past month
- Multilingual support
- Comparison to Grammarly
These summaries are automatically generated weekly using AI based on recent user reviews. User
reviews may be inaccurate, spammy, or outdated.
User reviews
It is better than nothing but is often not great at spelling mistakes. I will misspell the word literally as literly and it will not give the word I want as a suggestion but when I search that word the search engine corrects me fine (there have been other words too but this was the most recent). Plus, the addon does not work in some places (like here for example).
by lee terry, 2025-04-02
by Firefox user 18916174, 2025-04-01
Presque parfait, si seulement il y a avait la variante Français Canada, je mettrais 5 étoiles :)
by Firefox user 17747950, 2025-04-01
Add-on safety
Risk impact
Grammar and Spell Checker - LanguageTool requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk impact analysis details
- Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood
Grammar and Spell Checker - LanguageTool has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- Medium This extension was updated in the past 3 months. New updates may not be stable or safe.
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** **** **** ****** ******* ********** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
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