Examine source code of 1QL Kurzlink Add on

{
  "manifest_version": 2,
  "name": "1QL Kurzlink Add on",
  "version": "0.0.3",
  "description": "Kürze und benenne Links mit dem 1QL Kurzlink Add on",
  "homepage_url": "https://github.com/Florian-Gropp/1ql-kurzlink-addon",
  "applications": {
    "gecko": {
      "id": "kurzlink@1ql.de",
      "strict_min_version": "57.0"
    }
  },
  "icons": {
    "48": "1ql.png",
    "96": "1ql.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "clipboardWrite",
    "contextMenus",
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "browser_style": true,
    "page": "options.html"
  },
  "browser_action": {
    "browser_style": true,
    "default_icon": "1ql.png",
    "default_title": "1QL",
    "default_popup": "popup.html"
  }
}