Is AI Grammar Checker & Paraphraser – LanguageTool Safe? — Extension Safety Profile
Quick verdict: AI Grammar Checker & Paraphraser – LanguageTool earns a safety grade A, 86.6 out of 100, based on 5 of 5 dimensions.
86.6/100
Grade A · 5 of 5 checks
What we found
Automated safety profile from public signals (the extension's manifest & permissions, store listing, publisher, privacy policy). A full review hasn't been published yet.
What this safety grade means
AI Grammar Checker & Paraphraser – LanguageTool earns a safety grade of A (86.6/100), measured across 5 of 5 dimensions. Its strongest area is Community Reputation (100%). The weakest is Publisher & Identity (60%) — what holds its grade back the most.
On the public records we can check, AI Grammar Checker & Paraphraser – LanguageTool comes through cleanly. 2,000,000 active users/installs reported on the store. Store rating 4.7/5 from 12,600 user ratings. Last updated on the store 2026-09-18. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open AI Grammar Checker & Paraphraser – LanguageTool's own store listing and privacy policy before installing, and weigh it against the other browser extensions we track below.
Safety Signals
Based on 5 of 5 safety dimensions
| Dimension | Score | Bar | Source |
|---|---|---|---|
| Publisher & Identity | 60% · 4.8/8 pts 2 of 5 checks verified | Automated signals | |
| Permissions & Access | 90% · 22.5/25 pts 3 of 3 checks verified | Automated signals | |
| Data & Privacy | 80% · 12.8/16 pts 4 of 5 checks verified | Automated signals | |
| Maintenance & Ownership | 100% · 7.5/7.5 pts 1 of 2 checks verified | Automated signals | |
| Community Reputation | 100% · 10/10 pts 2 of 4 checks verified | Automated signals |
In-depth safety analysis
This extension checks grammar and paraphrases text. It requests permissions like activeTab and scripting, which allow it to read and modify content on the current webpage only when you click the extension. That is typical for a writing assistant that needs to analyze text you are actively editing. The storage permission lets it save your settings locally, and contextMenus adds a right-click option. These permissions are expected for its category.
For any grammar or writing tool, a careful user should be aware that the extension can access text you type into websites, including sensitive fields if you invoke it there. The developer states it collects website content and personal communications, which is logical for a service that processes your writing. You should review the privacy policy to understand how that data is handled and whether it is stored or shared with third parties.
The fact sheet shows a high safety score of 86.6/100. The strongest dimension is Community Reputation, reflecting a large user base and strong ratings. The weakest is Publisher & Identity, which scored 60%. This suggests that while the extension is widely trusted, the publisher's identity verification could be more robust. Users who prioritize verified publishers may want to note that.
AI-assisted analysis of the documented signals above (permissions, store data, privacy practices) — explains what they mean and the risks typical for this category. Not a hands-on test.
What the store listing shows
Who's Behind AI Grammar Checker & Paraphraser – LanguageTool?
- Publisher LanguageTooler GmbH
Public records identify the publisher, but no individual founders or a separate registered company are named — which is what holds the Publisher & Identity score back. Less public information about who operates an extension means less you can verify about their long-term accountability.
How it compares
Among the 838 browser extensions we track, AI Grammar Checker & Paraphraser – LanguageTool scores higher on safety than 88% of them.
Computed from our own database of assessed browser extensions — updated as we track more.
Evidence on File (12)
AI Grammar Checker & Paraphraser – LanguageTool FAQ
- Is AI Grammar Checker & Paraphraser – LanguageTool safe?
- AI Grammar Checker & Paraphraser – LanguageTool earns a safety grade of A (86.6/100) on our evidence-based assessment, based on 5 of 5 safety dimensions we could verify from public records. This is an automated profile built from public records, not a hands-on review.
- Who is behind AI Grammar Checker & Paraphraser – LanguageTool?
- AI Grammar Checker & Paraphraser – LanguageTool is operated by LanguageTooler GmbH.
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