Examine source code of RPUB

{
  "manifest_version": 2,
  "name": "RPUB",
  "version": "1.8",
  "description": "Detects power users/bots on reddit",
  "browser_specific_settings": {
    "gecko": {
      "id": "rpub@pixartist.de"
    }
  },
  "icons": {
    "48": "icons/icon48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.reddit.com/*"
      ],
      "js": [
        "pub.js"
      ]
    }
  ],
  "permissions": [
    "storage",
    "webRequest",
    "*://*.reddit.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    }
  }
}