manifest.json

{
  "manifest_version": 3,
  "name": "Goodreads Compare Books",
  "description": "Adding info about similarity of user's tastes on Goodreads site.",
  "version": "0.5",
  "author": "Petr Kubát",    
  "action": {
    "default_icon": {
      "19": "icons/icon_19.png",
      "38": "icons/icon_38.png"
    },
    "default_title": "Goodreads Compare Books",      
    "default_popup": "html/popup.html"
  },
  "icons": {
    "16": "icons/icon_16.png",
    "48": "icons/icon_48.png",
    "128": "icons/icon_128.png"
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "https://www.goodreads.com/*"
  ],
  "content_scripts": [{        
    "js": ["js/jquery-3.3.1.min.js", "js/tippy.all.min.js", "js/alertify.min.js", "js/background.js"],
    "css": [ "css/alertify.min.css", "css/themes/default.min.css" ],
    "matches": [ "https://www.goodreads.com/", "https://www.goodreads.com/*/*"]
  }],
  "web_accessible_resources": [{
    "resources": [ "css/*" ],
    "matches": [ "https://www.goodreads.com/*" ]
  }]
}