Examine source code of jeparser

{
  "manifest_version": 3,
  "name": "jeparser",
  "version": "3.1.0",
  "description": "Browser extension which downloads Jeopardy games from applets for offline solving.",
  "homepage_url": "https://github.com/cmnord/jeparser",
  "minimum_chrome_version": "88",
  "browser_specific_settings": {
    "gecko": {
      "id": "jeparser@cmnord.github.com",
      "strict_min_version": "67.0"
    }
  },
  "icons": {
    "128": "icon.png"
  },
  "action": {
    "default_icon": "icon.png",
    "default_title": "jeparser",
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://j-archive.com/showgame.php*"
      ],
      "js": [
        "parser.js",
        "content-script.js",
        "browser-polyfill.min.js"
      ],
      "run_at": "document_end"
    }
  ]
}