Examine source code of QR 2 Text

{
  "manifest_version": 2,
  "name": "QR 2 Text",
  "description": "A non-intrusive QR code paste & decode Firefox add-on",
  "version": "1.1.0",
  "author": "Florent Tassy",
  "homepage_url": "https://gitlab.com/florent_tassy/qr-2-text",
  "default_locale": "en",
  "browser_specific_settings": {
    "gecko": {
      "id": "qr2text@ftassy",
      "strict_min_version": "91.0"
    }
  },
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "QR 2 Text",
    "default_icon": "icon-dark.svg",
    "theme_icons": [
      {
        "light": "icon-light.svg",
        "dark": "icon-dark.svg",
        "size": 16
      },
      {
        "light": "icon-light.svg",
        "dark": "icon-dark.svg",
        "size": 32
      }
    ]
  },
  "icons": {
    "16": "icon-dark.svg",
    "32": "icon-dark.svg"
  }
}