SECURITY REPORT · EXTENSHI SCAN
HLS
Firefox extension·by sky
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
HLS's safety score vs every other extension we've scanned
Globally
18%of extensions carry more risk
Riskier ←→ Safer
Ranked against 369,936 extensions
In Photos Music Videos
7%of photos music videos extensions carry more risk
Riskier ←→ Safer
Ranked against 10,146 photos music videos extensions
Findings
36
median 4Lower is safer
Critical findings
2
median 0Severity = Critical
Permissions
16
median 3Declared in manifest
Active users
219
median 6vs category median
Findings breakdown
Automated security signal · 36 distinct issues across 6 severities
36
distinct issues
detected
detected
Critical26%
High617%
Needs Review00%
Medium2775%
Low13%
Info00%
Permissions requested
8 risky permissions of 16 total
2 critical permissions require attention
This extension requests 16 permissions in total. 8 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
Critical
Communicate with desktop apps
Can exchange messages with applications installed on your computer
High
Observe web requests
Can monitor all network requests made by the browser
High
Block and modify web requests
Can intercept, block, or modify any network request before it completes
High
Developer tools
Can extend browser developer tools with custom panels
High
Manage downloads
Can initiate downloads and access your download history
Medium
Access location
Can determine your physical location
Medium
Show notifications
Can display desktop notifications outside the browser
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
Custom menus
Can add custom items to the browser context menu
Medium
Add context menu items
Can add custom items to the right-click context menu
Low
Find in page
Can use the browser find-in-page functionality
Are you the author of HLS?
Claim this extension to respond to findings, add context, and earn a verified badge on extenshi.io.
Add the badge to your README
Show HLS's live security score on GitHub or in your docs
Scan performed by extenshi.io · Aug 11, 2026
Browser extensions made transparent.