Examine source code of Gamers' Plane

{
  "name": "Gamers' Plane",
  "version": "0.9.9.9",
  "icons": {
    "16": "icon_16.png",
    "32": "icon_32.png",
    "64": "icon_48.png",
    "128": "icon_128.png"
  },
  "description": "Options for changing the Gamers' Plane experience.",
  "permissions": [
    "storage"
  ],
  "web_accessible_resources": [
    "options.html"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://gamersplane.com/forums/thread/*"
      ],
      "css": [
        "gp-thread.css"
      ],
      "js": [
        "jquery-3.5.1.min.js",
        "setting-storage.js",
        "gp-thread.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://gamersplane.com/characters/dnd5/*/edit/"
      ],
      "css": [
        "gp-edit-dnd5e.css"
      ],
      "js": [
        "jquery-3.5.1.min.js",
        "setting-storage.js",
        "gp-edit-dnd5e.js"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://www.dndbeyond.com/profile/*/characters/*"
      ],
      "css": [
        "dndb-charactersheet.css"
      ],
      "js": [
        "jquery-3.5.1.min.js",
        "setting-storage.js",
        "dndb-charactersheet.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "manifest_version": 2
}