Examine source code of Booki

{
  "manifest_version": 2,
  "name": "Booki",
  "description": "View personal recommendations while browsing and bookmark to save links for later.",
  "version": "0.13resigned1",
  "browser_action": {
    "default_icon": "images/regular-icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "client.css",
        "popup-center.css"
      ],
      "js": [
        "md5.js",
        "disable-domains.js",
        "visited-block-list.js",
        "jquery-3.2.1.js",
        "page/link-on-page.js",
        "popup-center.js",
        "highlight-tag.js",
        "messages.js",
        "client.js"
      ]
    }
  ],
  "icons": {
    "16": "images/regular-icon.png",
    "48": "images/regular-icon.png",
    "128": "images/regular-icon.png"
  },
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*",
    "activeTab",
    "cookies",
    "contextMenus"
  ],
  "web_accessible_resources": [
    "images/*"
  ],
  "background": {
    "scripts": [
      "md5.js",
      "jquery-3.2.1.js",
      "jquery.cookie.js",
      "theme-object.js",
      "background-general.js",
      "background-server.js",
      "background-firefox.js",
      "background-rigth-click.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{360da774-aeb3-40b0-a934-4dbcd3a5b95e}"
    }
  }
}