6.6
Stylish - Custom themes for any website
🌐 Chrome ExtensionUnknown
With hundreds of thousands of themes, skins & free backgrounds, you can customize any website with your own color scheme in a click.
2,000,000 usersRating: 4.3/5v3.4.14
Medium Risk6.6/10
Scanned June 2, 2026
Risk Flags
Critical permission: "scripting" — inject scripts into web pages
Critical permission: "webRequest" — observe and analyze all web traffic
Critical permission: "*://*/*" — access ALL websites you visit
Shares data with external services: .userstyles.org/, ://localhost/
Some data is transmitted without HTTPS encryption
6.0
Permissions
8.0
Developer
4.5
Data Privacy
10.0
Policy Match
Permissions (11)
Store data locally in the browser
storageexpected
Standard for password managers — this permission is required for core functionality
Read your open tabs and navigation activity
tabsexpected
Standard for password managers — this permission is required for core functionality
Schedule tasks to run periodically
alarmsacceptable
Common for password managers — used by most tools in this category
Inject scripts into web pages
scriptingunusual
Not typical for password managers — review why this is needed
Track detailed navigation events
webNavigationunusual
Not typical for password managers — review why this is needed
Observe and analyze all web traffic
webRequestunusual
Not typical for password managers — review why this is needed
Add items to right-click menus
contextMenusexpected
Standard for password managers — this permission is required for core functionality
Access ALL websites you visit
*://*/*unusual
Not typical for password managers — review why this is needed
Access data on *
http://*/*acceptable
Common for password managers — used by most tools in this category
Access data on *
https://*/*acceptable
Common for password managers — used by most tools in this category
Access all websites you visit
<all_urls>expected
Standard for password managers — this permission is required for core functionality
Developer
NameNot disclosed
Verified PublisherYes
Known EntityNot recognized
Data Flows
Extension background service
Encryptedtab data
.userstyles.org/3rd party
Encryptedextension messages
://localhost/3rd party
Unencryptedextension messages
Privacy Policy Analysis
Policy Status
Policy found
https://userstyles.org/privacy-policy
Actual Data Collection
- tab data
Policy matches observed behavior
Alternatives to Consider
Know what your tools are really doing.