Examine source code of THR Search Helper

{
  "manifest_version": 2,
  "name": "THR Search Helper",
  "version": "1.0",
  "description": "Dodaje IMDb toggle za brzu pretragu IMDb ID-ja u TorrentHR tražilici.",
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "https://v3.sg.media-imdb.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.torrenthr.org/browse.php*",
        "https://www.torrenthr.org/browse2.php*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "applications": {
    "gecko": {
      "id": "thr-search-helper@example.com"
    }
  }
}