SECURITY REPORT · EXTENSHI SCAN
Reader
Firefox extension·by Theo
80
/ 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
Reader's safety score vs every other extension we've scanned
Globally
37%of extensions carry more risk
Riskier ←→ Safer
Ranked against 402,636 extensions
In Feeds News Blogging
17%of feeds news blogging extensions carry more risk
Riskier ←→ Safer
Ranked against 7,307 feeds news blogging extensions
Findings
8
median 4Lower is safer
Critical findings
1
median 0Severity = Critical
Permissions
4
median 3Declared in manifest
Active users
7
median 2vs category median
Findings breakdown
Automated security signal · 8 distinct issues across 6 severities
8
distinct issues
detected
detected
Critical113%
High113%
Needs Review00%
Medium563%
Low113%
Info00%
Permissions requested
2 risky permissions of 4 total
1 critical permission require attention
This extension requests 4 permissions in total. 2 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
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
Are you the author of Reader?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show Reader's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 1, 2026
Browser extensions made transparent.