Examine source code of Wakfupedia++

{
  "manifest_version": 2,
  "name": "Wakfupedia++",
  "version": "0.0.0.5",
  "description": "WAKFU is a MMORPG made by Ankama.\nWakfupedia++ is a player made, unofficial, extension that displays buff tooltips in the Wakfu encyclopedia.",
  "icons": {
    "128": "icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.wakfu.com/*"
      ],
      "js": [
        "jquery-3.4.1.min.js",
        "dom-change-listener.js",
        "wildcard-match.js",
        "tooltip-fix.js",
        "filter-fix.js"
      ]
    }
  ]
}