Library Sniffer by xiaofeng
Sniff website frameworks, libraries, servers, and optional remote technology API results.
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About this extension
Manifest V3 service worker architecture.
Local detection for common CMS, JavaScript libraries, web frameworks, analytics tools, APIs, and web servers.
Normalized remote technology categories for JavaScript frameworks, CDN, security, payment processors, font scripts, JavaScript libraries, web frameworks, UI frameworks, and programming languages.
Optional free API lookup providers:
TechnologyChecker Free plan: GET https://api.technologychecker.io/v1/domain/DOMAIN
BuiltWith Free API: GET https://api.builtwith.com/free1/api.json?KEY=API_KEY&LOOKUP=DOMAIN
Refreshed options page and new release icons.
Local detection for common CMS, JavaScript libraries, web frameworks, analytics tools, APIs, and web servers.
Normalized remote technology categories for JavaScript frameworks, CDN, security, payment processors, font scripts, JavaScript libraries, web frameworks, UI frameworks, and programming languages.
Optional free API lookup providers:
TechnologyChecker Free plan: GET https://api.technologychecker.io/v1/domain/DOMAIN
BuiltWith Free API: GET https://api.builtwith.com/free1/api.json?KEY=API_KEY&LOOKUP=DOMAIN
Refreshed options page and new release icons.
Rated 0 by 0 reviewers
Permissions and data
Required permissions:
- Access browser tabs
- Access your data for all websites
Optional permissions:
- Access your data for all websites
Required data collection, according to the developer:
- Browsing activity
More information
- Add-on Links
- Version
- 2.9.1
- Size
- 536.13 KB
- Last updated
- 3 days ago (Jun 30, 2026)
- Related Categories
- Version History
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