Is Close duplicate tab Safe? — Extension Safety Profile
Quick verdict: Close duplicate tab earns a safety grade A, 84.6 out of 100, based on 5 of 5 dimensions.
84.6/100
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
Close duplicate tab earns a safety grade of A (84.6/100), 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 tab comes through cleanly. 10,000 active users/installs reported on the store. Store rating 4.5/5 from 17 user ratings. Last updated on the store 2026-08-03. This is an automated profile, not a hands-on review — so treat the grade as a starting point: open Close duplicate tab'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 | Automated signals | |
| Permissions & Access | 90% · 22.5/25 pts | Automated signals | |
| Data & Privacy | 83% · 13.2/16 pts | Automated signals | |
| Maintenance & Ownership | 100% · 7.5/7.5 pts | Automated signals | |
| Community Reputation | 83% · 8.3/10 pts | Automated signals |
What the store listing shows
Who's Behind Close duplicate tab?
- Publisher heppokofrontend.dev
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 345 browser extensions we track, Close duplicate tab scores higher on safety than 81% of them.
Computed from our own database of assessed browser extensions — updated as we track more.
Evidence on File (12)
Close duplicate tab FAQ
- Is Close duplicate tab safe?
- Close duplicate tab earns a safety grade of A (84.6/100) 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 Close duplicate tab?
- Close duplicate tab is operated by heppokofrontend.dev.
Browse all browser extensions we've checked →