Examine source code of StopAD

{
  "manifest_version": 3,
  "name": "StopAD",
  "version": "1.0",
  "description": "A simple extension to block all ads.",
  "permissions": [
    "declarativeNetRequest",
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "adblock_rules",
        "enabled": true,
        "path": "rules.json"
      }
    ]
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": "stop.png"
  },
  "icons": {
    "64": "stop64orange.png",
    "512": "stop.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "stopad@rachid.com"
    }
  }
}