Examine source code of Sanitized Browsing

{
  "manifest_version": 3,
  "name": "Sanitized Browsing — text-only reader",
  "version": "1.0.0",
  "description": "Strips CSS and JavaScript from the current page or any URL, showing only formatted text: headings, paragraphs, links, lists, and tables.",
  "browser_specific_settings": {
    "gecko": {
      "id": "sanitized-browsing@anthony.online",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "content_security_policy": {
    "extension_pages": "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' blob:; object-src 'none'; base-uri 'self'; form-action 'none'; connect-src *;"
  },
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Sanitized Browsing",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png"
    }
  }
}