8.6
Stylus
🌐 Chrome ExtensionUnknown
Redesign the web with Stylus, a user styles manager. Stylus allows you to easily install themes and skins for many popular sites.
1,000,000 usersRating: 4.5/5v2.3.28
Low Risk8.6/10
Scanned June 2, 2026
Risk Flags
Critical permission: "scripting" — inject scripts into web pages
Unexpected for this type of tool: "identity" — access your Google account identity
7.1
Permissions
8.0
Developer
10.0
Data Privacy
10.0
Policy Match
Permissions (19)
Schedule tasks to run periodically
alarmsacceptable
Common for ad blockers — used by most tools in this category
Add items to right-click menus
contextMenusexpected
Standard for ad blockers — this permission is required for core functionality
Store data locally in the browser
storageexpected
Standard for ad blockers — this permission is required for core functionality
Read your open tabs and navigation activity
tabsacceptable
Common for ad blockers — used by most tools in this category
Unknown permission: unlimitedStorage
unlimitedStorageacceptable
Common for ad blockers — used by most tools in this category
Track detailed navigation events
webNavigationacceptable
Common for ad blockers — used by most tools in this category
Observe and analyze all web traffic
webRequestexpected
Standard for ad blockers — this permission is required for core functionality
Intercept and modify web traffic
webRequestBlockingexpected
Standard for ad blockers — this permission is required for core functionality
Unknown permission: declarativeNetRequestWithHostAccess
declarativeNetRequestWithHostAccessunusual
Uncommon for ad blockers but not necessarily a concern
Access your Google account identity
identitysuspicious
Unexpected for ad blockers — this permission has no clear purpose for this type of tool
Unknown permission: idle
idleunusual
Uncommon for ad blockers but not necessarily a concern
Unknown permission: offscreen
offscreenunusual
Uncommon for ad blockers but not necessarily a concern
Inject scripts into web pages
scriptingunusual
Not typical for ad blockers — review why this is needed
Unknown permission: sidePanel
sidePanelunusual
Uncommon for ad blockers but not necessarily a concern
Access all websites you visit
<all_urls>expected
Standard for ad blockers — this permission is required for core functionality
Access data on userstyles.org
https://userstyles.org/*acceptable
Common for ad blockers — used by most tools in this category
Access data on greasyfork.org
https://greasyfork.org/*scripts/*acceptable
Common for ad blockers — used by most tools in this category
Access data on sleazyfork.org
https://sleazyfork.org/*scripts/*acceptable
Common for ad blockers — used by most tools in this category
Access data on userstyles.world
https://userstyles.world/*acceptable
Common for ad blockers — used by most tools in this category
Developer
NameNot disclosed
Verified PublisherYes
Known EntityNot recognized
Data Flows
Extension background service
Encryptedtab data, identity
Privacy Policy Analysis
Policy Status
Policy found
https://github.com/openstyles/stylus/blob/master/privacy-policy.md
Actual Data Collection
- tab data
- identity
Policy matches observed behavior
Alternatives to Consider
Know what your tools are really doing.