Examine source code of GoLinks

{
  "manifest_version": 2,
  "name": "GoLinks",
  "description": "The official Golinks.io browser extension. Seamlessly create team shortlinks, aka go links or go/links, with just one click.",
  "homepage_url": "https://www.golinks.io",
  "version": "2.7.27",
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon48.png",
    "default_popup": "popup.html"
  },
  "omnibox": {
    "keyword": "go/"
  },
  "permissions": [
    "*://go/*",
    "*://*.golinks.io/*",
    "*://*.golinks.com/*",
    "activeTab",
    "cookies",
    "storage",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "tabs"
  ],
  "background": {
    "scripts": [
      "lib/jquery.min.js",
      "background.js"
    ],
    "persistent": true
  },
  "content_security_policy": "script-src 'self'; connect-src https://*.golinks.io; object-src 'self' blob:; font-src 'self';",
  "content_scripts": [
    {
      "matches": [
        "*://*.golinks.io/*",
        "*://*.golinks.com/*"
      ],
      "js": [
        "identifier.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "icons/icon16.png",
    "images/*"
  ],
  "applications": {
    "gecko": {
      "id": "teamgolinks@gmail.com",
      "strict_min_version": "65.0"
    }
  }
}