Examine source code of Salesforce Org Type

{
  "description": "Adds the org name to the top of the page to allow you to know what org you are working in.",
  "manifest_version": 3,
  "name": "Salesforce Org Type",
  "version": "1.0",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.force.com/*",
        "*://*.salesforce.com/*"
      ],
      "js": [
        "borderify.js"
      ],
      "run_at": "document_end",
      "all_frames": false
    }
  ],
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "salesforce-org-type@ssw"
    }
  }
}