Examine source code of Gothic font converter

{
  "manifest_version": 2,
  "name": "Gothic font converter",
  "version": "1.6resigned1",
  "description": "Lets the browser standardly use the Skeirs font for Gothic script.",
  "applications": {
    "gecko": {
      "id": "gothicscriptconverter@mozilla.org",
      "strict_min_version": "45.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "gothic.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "font/Skeirs-II.woff2",
    "font/Skeirs-II.woff",
    "font/Skeirs-II.ttf"
  ]
}