Is Close Duplicate Tabs Safe? — Extension Safety Profile
Quick verdict: Close Duplicate Tabs earns a safety grade A, 83.3 out of 100, based on 5 of 5 dimensions.
83.3/100
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
Close Duplicate Tabs earns a safety grade of A (83.3/100), 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, Close Duplicate Tabs comes through cleanly. 10,000 active users/installs reported on the store. Store rating 4.0/5 from 79 user ratings. Last updated on the store 2026-05-02. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open Close Duplicate Tabs'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 | 83% · 13.2/16 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 | 74% · 7.4/10 pts 2 of 4 checks verified | Automated signals |
In-depth safety analysis
This extension requests permissions to manage your tabs, tab groups, and windows, plus storage for settings, alarms for scheduling, keyboard commands, and context menus. These are typical for a tool that finds and closes duplicate tabs, as it needs to read tab titles and URLs to detect duplicates. It does not request host permissions, so it cannot read the content of web pages.
Tab management extensions inherently see the URLs of all open tabs, so a careful user should consider that this data could be collected if a developer chose to do so, even without host permissions. The developer's privacy declarations state they do not sell or misuse data, but these are self-reported. As with any extension, it's wise to check for a clear privacy policy and be aware that future updates could alter its behavior. Tab closers are generally considered low-risk when from a trusted source.
The extension receives a strong Maintenance score, indicating regular updates and active ownership, which is a positive sign for reliability. Its weakest point is Publisher & Identity, suggesting limited verified information about the developer IdleDev. This lower trust in the publisher's identity is worth noting, though the overall safety grade remains high.
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 Close Duplicate Tabs?
- Publisher IdleDev
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, Close Duplicate Tabs scores higher on safety than 75% of them.
Computed from our own database of assessed browser extensions — updated as we track more.
Evidence on File (12)
Close Duplicate Tabs FAQ
- Is Close Duplicate Tabs safe?
- Close Duplicate Tabs earns a safety grade of A (83.3/100) 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 Close Duplicate Tabs?
- Close Duplicate Tabs is operated by IdleDev.
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