Examine source code of MathML-fonts

{
  "manifest_version": 2,
  "name": "MathML Fonts",
  "version": "3.1resigned1",
  "description": "Fonts for Mozilla's MathML engine.",
  "author": "Frédéric Wang",
  "homepage_url": "https://github.com/fred-wang/MathFonts",
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "all_frames": true,
      "css": [
        "mathfonts.css"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    "fonts/LatinModern/latinmodern-math.woff2",
    "fonts/STIX/STIX2Math.woff2"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "MathML-fonts@mozilla.com"
    }
  }
}