Is Language Reactor Safe? — Extension Safety Profile
Quick verdict: Language Reactor earns a safety grade A, 85.3 out of 100, based on 5 of 5 dimensions.
85.3/100
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
Language Reactor earns a safety grade of A (85.3/100), measured across 5 of 5 dimensions. Its strongest area is Maintenance & Ownership (100%). The weakest is Publisher & Identity (60%) — what holds its grade back the most.
On the public records we can check, Language Reactor comes through cleanly. 2,000,000 active users/installs reported on the store. Store rating 3.7/5 from 4,400 user ratings. Last updated on the store 2026-07-01. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open Language Reactor'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 | 85% · 21.2/25 pts 3 of 3 checks verified | Automated signals | |
| Data & Privacy | 93% · 14.8/16 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 | 84% · 8.4/10 pts 2 of 4 checks verified | Automated signals |
In-depth safety analysis
This extension requests permissions that are typical for a tool that modifies or enhances web content on specific sites. The activeTab and scripting permissions allow it to read and change the page you are currently viewing, but only when you invoke the extension. The storage permission lets it save your settings locally. The host access to i.ytimg.com is specifically for interacting with YouTube's image server, which aligns with its language-learning features that overlay subtitles and translations on video content.
As a general browser extension that interacts with page content, a careful user should be aware that such tools can theoretically see the text of websites you visit when active. The developer's privacy disclosures state they collect personally identifiable information, so you may want to review their privacy policy to understand what data is gathered and how it is handled. The extension uses Manifest V3, which is the current platform standard with tighter security restrictions on background processes.
Looking at the fact sheet, the strongest dimension is Maintenance & Ownership, indicating the extension is actively updated and well-maintained. The weakest dimension is Publisher & Identity, which suggests there is limited publicly documented information about the developer behind the extension, Dioco.
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 Language Reactor?
- Publisher Dioco
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, Language Reactor scores higher on safety than 84% of them.
Computed from our own database of assessed browser extensions — updated as we track more.
Evidence on File (12)
Language Reactor FAQ
- Is Language Reactor safe?
- Language Reactor earns a safety grade of A (85.3/100) 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 Language Reactor?
- Language Reactor is operated by Dioco.
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