Examine source code of dansercreditor

{
  "manifest_version": 2,
  "name": "ordrcreditadder",
  "version": "1.0.2",
  "description": "Adds credit for danser on the ordr page",
  "icons": {
    "48": "icons/icon48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://ordr.issou.best/*"
      ],
      "js": [
        "addcredit.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8114b10f-1015-4ed2-8df8-b84cd1dde088}"
    }
  }
}