Examine source code of Rumin

{
  "name": "Rumin",
  "version": "0.0.0.12",
  "description": "The fastest way to collect information from diverse sources on the web - Rumin helps you capture any content instantly.",
  "permissions": [
    "<all_urls>",
    "activeTab",
    "tabs",
    "storage"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "vendor/jquery-3.4.1.min.js",
        "content.js"
      ],
      "css": [
        "css/content.css"
      ]
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "images/icon16.png",
      "24": "images/icon24.png",
      "32": "images/icon32.png"
    }
  },
  "icons": {
    "16": "images/icon16.png",
    "24": "images/icon24.png",
    "32": "images/icon32.png",
    "128": "images/icon128.png"
  },
  "manifest_version": 2
}