Examine source code of Copy Unicode URLs

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "homepage_url": "https://github.com/ilyaigpetrov/copy-unicode-urls",
  "default_locale": "en",
  "version": "0.0.21",
  "icons": {
    "128": "icons/u-red-128.png"
  },
  "author": "ilyaigpetrov+copy-unicode-urls@gmail.com",
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage",
    "clipboardWrite"
  ],
  "background": {
    "persistent": true,
    "page": "./bg.html"
  },
  "options_page": "./pages/options/index.html",
  "options_ui": {
    "chrome_style": true,
    "page": "./pages/options/index.html"
  },
  "browser_action": {
    "default_title": "__MSG_iconHint__",
    "default_icon": "./icons/u-red-128.png"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+U"
      }
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ec113e08-3560-4792-a123-26355ac2d26d}"
    }
  }
}