SECURITY REPORT · EXTENSHI SCAN
Nimbus Screen Capture: Screenshot, Edit, Annotate
Firefox extension·by Nimbus Web
0
/ 100 SAFETY SCORE
DANGEROUS
Meaningful risk surface. Avoid on managed devices without review.
Likely abandonedsafety score reduced by 30 points
- No update in over 6 years
Why this matters
An unmaintained extension keeps whatever flaws it shipped with, and a listing with users but no owner is an attractive target to buy and repurpose.
Automated analysis of publicly available code — not a professional security audit. It may produce false positives and does not prove an extension is unsafe or safe. Treat it as one signal among many. Disclaimer · Report an issue
How it ranks
Nimbus Screen Capture: Screenshot, Edit, Annotate's safety score vs every other extension we've scanned
Globally
4%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Photos Music Videos
1%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 10,146 photos music videos extensions
Findings
141
median 4Lower is safer
Critical findings
5
median 0Severity = Critical
Permissions
10
median 3Declared in manifest
Active users
29387
median 6vs category median
Findings breakdown
Automated security signal · 141 distinct issues across 6 severities
141
distinct issues
detected
detected
Scanners reported 143 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical54%
High1410%
Needs Review00%
Medium10776%
Low1410%
Info11%
Permissions requested
3 risky permissions of 10 total
1 critical permission require attention
This extension requests 10 permissions in total. 3 of them grant broad capabilities that are worth a careful look.
Critical
Access to all websites
Can read and modify content on every website you visit
High
Manage downloads
Can initiate downloads and access your download history
High
View open tabs
Can see URLs and titles of all open tabs
Medium
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Unlimited local storage
Can store large amounts of data locally without size limits
Medium
Add context menu items
Can add custom items to the right-click context menu
Medium
Read clipboard
Can read text and data currently on your clipboard
Medium
Write to clipboard
Can place content onto your clipboard
Medium
Show notifications
Can display desktop notifications outside the browser
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Scan performed by extenshi.io · Aug 19, 2026
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