Dan Pan

Web developer and tool builder. Building CheckRun — a browser checklist tool for SEO audits, QA, and web workflows. Also working on WebSocket testing tools.

Biographies for publication

Short biography

Dan Pan is a web developer focused on browser-based productivity tools. He built a browser checklist tool that runs reusable checklists in the Chrome side panel — used by SEO specialists, QA engineers, and developers for repeatable web workflows.

Full biography

Dan Pan is a web developer and tool builder specializing in browser extensions and web-based productivity tools.

He is the creator of a website audit checklist extension for Chrome — a free tool that runs reusable checklists directly in the browser side panel. It lets users build templates once and run them against any page without switching tabs, with full run history, per-template statistics, and Google Sheets export. Used for website audits, QA passes, deploy checklists, onboarding, and project launches.

He also builds WebSocket testing tools at tests.ws — a proxy tool for monitoring, debugging, and modifying WebSocket traffic in real-time.