Examine source code of ContextBlur

{
  "manifest_version": 3,
  "name": "ContextBlur",
  "version": "2.0.0",
  "description": "Click elements to blur them. Optional auto-blur scans visible page text locally when you run it. No data transmitted.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ],
  "background": {
    "scripts": [
      "ExtPay.js",
      "browser-compat.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_title": "ContextBlur - Click to blur elements",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; connect-src 'self' https://extensionpay.com"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "contextblur@contextblur.app",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "sidebar_action": {
    "default_title": "ContextBlur",
    "default_panel": "sidepanel.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png"
    }
  }
}