Examine source code of Donate4.Fun

{
  "manifest_version": 2,
  "name": "Donate4.Fun",
  "description": "Support creators instantly using Bitcoin Lightning Network",
  "homepage_url": "https://donate4.fun",
  "author": "Nikolay Bryskin",
  "version": "0.7.0",
  "icons": {
    "48": "static/D.svg",
    "96": "static/D.svg"
  },
  "applications": {
    "gecko": {
      "id": "donate4fun@donate4.fun"
    }
  },
  "permissions": [
    "storage",
    "activeTab",
    "cookies",
    "https://*.donate4.fun/*"
  ],
  "background": {
    "page": "background.html"
  },
  "content_scripts": [
    {
      "js": [
        "contentscript.js"
      ],
      "css": [
        "contentscript.css",
        "static/global.css"
      ],
      "run_at": "document_end",
      "matches": [
        "https://*.youtube.com/*"
      ]
    },
    {
      "js": [
        "contentscripts/donate4.fun.js"
      ],
      "run_at": "document_start",
      "matches": [
        "*://*.donate4.fun/*"
      ]
    }
  ],
  "browser_action": {
    "default_icon": "static/D.svg",
    "default_title": "Donate4.Fun",
    "default_popup": "popup.html"
  },
  "options_ui": {
    "page": "options.html"
  }
}