Examine source code of Idleforest

{
  "icons": {
    "16": "icon16.plasmo.2577fc03.png",
    "32": "icon32.plasmo.d583dc1e.png",
    "48": "icon48.plasmo.e0fcfb1d.png",
    "64": "icon64.plasmo.e6259081.png",
    "128": "icon128.plasmo.96a1ede9.png"
  },
  "manifest_version": 3,
  "action": {
    "default_icon": {
      "16": "icon16.plasmo.2577fc03.png",
      "32": "icon32.plasmo.d583dc1e.png",
      "48": "icon48.plasmo.e0fcfb1d.png",
      "64": "icon64.plasmo.e6259081.png",
      "128": "icon128.plasmo.96a1ede9.png"
    },
    "default_popup": "popup.html"
  },
  "version": "1.0.4",
  "author": "daniiba",
  "name": "Idle forest - Plant trees for free!",
  "description": "Plant trees while you browse, turning your everyday internet usage into real trees.",
  "background": {
    "scripts": [
      "static/background/index.js"
    ]
  },
  "permissions": [
    "identity",
    "storage",
    "declarativeNetRequest"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "contents.aa9f231f.js"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "css": []
    },
    {
      "matches": [
        "https://*.idleforest.com/*"
      ],
      "js": [
        "idleforest.110ed026.js"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "css": []
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "idleforest@idleforest.com"
    }
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "tabs/pascoli.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    },
    {
      "resources": [
        "options.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}