Examine source code of RandomLightshot

{
  "manifest_version": 2,
  "name": "RandomLightshot",
  "version": "1.0",
  "description": "open random LightShot",
  "content_scripts": [
    {
      "matches": [
        "*://*.prnt.sc/*"
      ],
      "js": [
        "random.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "randomlightshot@dev-village.de"
    }
  }
}