A quieter corner of the internet.

This portal does not use visitor analytics, advertising cookies, or a visitor-facing GitHub API. Your color-theme preference is stored locally in your browser. Demonstration inputs are not sent to a server. Hosting providers may process standard request logs. External GitHub links follow GitHub’s privacy policy.

Website features and local storage

The website application does not set advertising or analytics cookies and does not include visitor analytics. It stores only your selected color theme in browser local storage. You can remove that preference through your browser settings. Interactive examples keep sample inputs in page memory; they are not saved or sent to a server.

Hosting and external services

The site is hosted on Cloudflare. Hosting and security services may process request information, such as IP addresses and browser information, to deliver and protect the site. The application does not embed external forms, videos, or third-party tracking scripts. Its images, scripts, styles, and fonts are served locally or supplied by your device.

Email and public project links

There is no contact form on this website. A mailto link opens your email application; sending a message is your separate action. If you email us, your message and the contact information you choose to provide reach the receiving mailbox. GitHub links take you to GitHub, where its own privacy policy applies. Do not post confidential information in public issues.

Questions about privacy

liyunlong@smartscity.com Privacy contact →