Examine source code of Font & Style Changer

{
  "manifest_version": 3,
  "name": "Font & Style Changer",
  "version": "1.0",
  "description": "Empowers users to customize the fonts, colors, and overall styling of any webpage. It can replace specific fonts, adjust text size globally or per site, and apply custom CSS rules. Useful for accessibility, aesthetics, and reading preferences.",
  "action": {
    "default_popup": "popup.html",
    "default_icon": "font_&_style_changer.png"
  },
  "icons": {
    "128": "font_&_style_changer.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "nqloramonacontpv213@hotmail.com"
    }
  }
}