Local storage
Hostname history stays in Chrome storage on the device where it was collected.
Open-source Chromium extension
Site Domains Explorer
See the first-party and third-party hostnames a website uses, while keeping the collected history on your own device.
Designed for transparency
Domain visibility without a remote backend
Explicit consent
Automatic collection remains disabled until the user accepts the disclosure.
Open source
The complete extension and its build process are published under the MIT License.
Privacy documentation
Review exactly what the extension processes
The policy explains stored data, permissions, retention, user controls, security, and the open-source commitment.