Examine source code of Pulsarr

{
  "manifest_version": 2,
  "name": "Pulsarr",
  "author": "roboticsound",
  "description": "Add movies/series to Radarr/Sonarr from IMDB and TVDB",
  "version": "2.2resigned1",
  "icons": {
    "16": "/img/icons/pulsarr/16.png",
    "32": "/img/icons/pulsarr/32.png",
    "48": "/img/icons/pulsarr/48.png",
    "128": "/img/icons/pulsarr/128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "page_action": {
    "default_icon": {
      "16": "/img/icons/pulsarr/16.png",
      "32": "/img/icons/pulsarr/32.png",
      "48": "/img/icons/pulsarr/48.png"
    },
    "default_popup": "popup.html",
    "default_title": "Add to Radarr"
  },
  "options_ui": {
    "page": "/opt/options.html",
    "chrome_style": false
  },
  "content_security_policy": "script-src 'self'; object-src 'self' ",
  "permissions": [
    "activeTab",
    "tabs",
    "webNavigation",
    "https://ajax.googleapis.com/",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{30ae3965-2bf6-459a-9ea5-01b4ae030dcc}"
    }
  }
}