SECURITY REPORT · EXTENSHI SCAN
Prefill
Chrome extension·by Alexander Moran
0
/ 100 SAFETY SCORE
CAUTION
Mostly fine, but a few things worth reviewing before you install.
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
Prefill's safety score vs every other extension we've scanned
Globally
20%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Productivity
27%of productivity extensions carry more risk
Riskier ←→ Safer
Ranked against 177,133 productivity extensions
Findings
137
median 16Lower is safer
Critical findings
0
median 0Severity = Critical
Permissions
8
median 3Declared in manifest
Active users
3
median 14vs category median
Findings breakdown
Automated security signal · 137 distinct issues across 6 severities
137
distinct issues
detected
detected
Scanners reported 147 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.
Critical00%
High32%
Needs Review00%
Medium13095%
Low43%
Info00%
Permissions requested
1 risky permission of 8 total
1 high-risk permission require attention
This extension requests 8 permissions in total. 1 of them grant broad capabilities that are worth a careful look.
High
Execute scripts in pages
Can inject and execute JavaScript code in web pages
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
Access current tab
Can temporarily access the content of the active tab when you click the extension
Medium
Write to clipboard
Can place content onto your clipboard
Low
Create offscreen documents
Can create hidden documents for background processing tasks
Low
Schedule tasks
Can schedule periodic background tasks
Low
Use side panel
Can display content in the browser side panel
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Scan performed by extenshi.io · Aug 9, 2026
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