Examine source code of Synopsis

{
  "manifest_version": 2,
  "name": "Synopsis",
  "version": "1.1",
  "description": "Sum up long youtube videos to a short readable version with the magical power of AI",
  "homepage_url": "https://github.com/dfthan/synopsis",
  "icons": {
    "48": "icons/logo-48.png"
  },
  "options_ui": {
    "page": "options/index.html"
  },
  "permissions": [
    "activeTab",
    "storage",
    "*://www.youtube.com/*"
  ],
  "browser_action": {
    "default_icon": "icons/logo-48.png",
    "default_popup": "popup/index.html",
    "default_title": "Synopsis",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "synopsis@synopsis"
    }
  }
}