linkedin extension fingerprinting

GitHub – mdp/linkedin-extension-fingerprinting

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LinkedIn silently checks 2,953 Chrome extensions on every page load.

This repository documents every extension checked by LinkedIn and provides tools to identify them.

Full list of extensions with names and Chrome Web Store links:

chrome_extensions_with_names_all.csv

pillar Description
extension id 32-character Chrome extension identifier
Name extension name
url Link to Chrome Web Store or Extpose

Retrieves extension names from the Chrome Web Store with expose fallback for removed/unavailable extensions.

# Fetch all extensions
node fetch_extension_names.js

# Fetch a subset (useful if rate limited)
node fetch_extension_names.js --offset 0 --limit 500
node fetch_extension_names.js -o 500 -l 500

# Show help
node fetch_extension_names.js --help

Test script that processes the first 3 extensions with verbose output.

  • 2,953 Total extensions in LinkedIn’s fingerprint list
  • ~78% Found on Chrome Web Store
  • ~22% Found via Expose fallback (deprecated or unavailable on Chrome Web Store)
  • chrome_extension_ids.txt – Raw list of extension IDs extracted from LinkedIn’s fingerprint.js
  • fingerprint.js – LinkedIn’s page script with extension (minified)



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