SECURITY REPORT · EXTENSHI SCAN
Substack PDF Downloader: Substack to PDF & Markdow
Firefox extension·by Neo Cortex
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
Substack PDF Downloader: Substack to PDF & Markdow's safety score vs every other extension we've scanned
Globally
67.53%of extensions carry more risk
Riskier ←→ Safer
Ranked across every extension we scan
In its category
57.53%of its category extensions carry more risk
Riskier ←→ Safer
Ranked within its category
Findings
84
median 38Lower is safer
Risky permissions
2
median 1Critical + high perms
Total permissions
4
median 4All declared perms
Critical findings
10
median 2Severity = Critical
Findings breakdown
Automated security signal · 84 findings across 5 severities
84
findings
detected
detected
Critical1012%
High22%
Medium7185%
Low11%
Info00%
Permissions requested
2 risky permissions of 4 total
2 high-risk permissions require attention
This extension requests 4 permissions in total. 2 of them grant broad capabilities that are worth a careful look.
High
Manage downloads
Can initiate downloads and access your download history
High
Access all HTTPS sites
Can read and modify content on all encrypted websites
Medium
Store local data
Can save data locally in the browser for persistence
Medium
Access user identity
Can get OAuth2 tokens and access your Google account identity
Are you the author of Substack PDF Downloader: Substack to PDF & Markdow?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Scan performed by extenshi.io · Jun 25, 2026· partial run (some scanners failed)
Browser extensions made transparent.