Examine source code of Upwork Job Tracker

{
  "manifest_version": 2,
  "name": "Upwork Job Tracker",
  "version": "2.4.4",
  "description": "A simple, efficient tool that searches and captures targeted Upwork jobs based on your preferences every minute.",
  "permissions": [
    "activeTab",
    "storage",
    "alarms",
    "notifications",
    "management",
    "https://www.upwork.com/nx/search/jobs/*",
    "https://www.upwork.com/jobs/*",
    "https://jabdesk.com/*"
  ],
  "background": {
    "scripts": [
      "browser-polyfill.js",
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.upwork.com/nx/search/jobs/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "48": "images/icon48.png",
      "128": "images/icon128.png"
    }
  },
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "settings.html",
    "activation-api.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9ed2a9a5-a0fe-40d5-8836-0008249fe28b}",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "developer": {
    "name": "JabDesk",
    "url": "https://jabdesk.com"
  }
}