extenshi.io
SECURITY REPORT · EXTENSHI SCAN

Checker Plus for Gmail™

Firefox extension·by Jason Savard
74
/ 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

Checker Plus for Gmail™'s safety score vs every other extension we've scanned
Globally
74.28999999999999%of extensions carry more risk
This extension
Riskier ←→ Safer
Ranked across every extension we scan
In its category
64.28999999999999%of its category extensions carry more risk
This extension
Riskier ←→ Safer
Ranked within its category
Findings
24
median 38Lower is safer
Risky permissions
4
median 1Critical + high perms
Total permissions
13
median 4All declared perms
Critical findings
0
median 2Severity = Critical

Findings breakdown

Automated security signal · 24 distinct issues across 6 severities
24
distinct issues
detected
Scanners reported 32 raw occurrences; repeats of the same issue at the same location are merged here. The list below shows every occurrence.

Permissions requested

4 risky permissions of 13 total
4 high-risk permissions require attention
This extension requests 13 permissions in total. 4 of them grant broad capabilities that are worth a careful look.
High
View open tabs

Can see URLs and titles of all open tabs

High
Access browser cookies

Can read and modify cookies, potentially accessing login sessions

High
Execute scripts in pages

Can inject and execute JavaScript code in web pages

High
Observe web requests(optional)

Can monitor all network requests made by the browser

Medium
Access current tab

Can temporarily access the content of the active tab when you click the extension

Medium
Show notifications

Can display desktop notifications outside the browser

Medium
Store local data

Can save data locally in the browser for persistence

Medium
Add context menu items

Can add custom items to the right-click context menu

Medium
Access user identity

Can get OAuth2 tokens and access your Google account identity

Medium
Block requests with host access

Can block or redirect network requests and requires host permissions

Low
Schedule tasks

Can schedule periodic background tasks

Low
Detect idle state

Can detect when your machine is idle, active, or locked

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Scan performed by extenshi.io · Jul 25, 2026· partial run (some scanners failed)
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