PwnDeck Scanner is a Chrome add-on designed for conducting instant security and privacy audits of any website. With a simple one-click operation, it assesses various security aspects such as headers, cookies, SSL/TLS protocols, technology stacks, and vulnerable JavaScript libraries without requiring any accounts or external servers. The tool provides a detailed rating from 1.0 to 10.0, along with actionable suggestions for improving site security.

This add-on focuses on privacy, ensuring that no data leaves the browser during the audit process, except for optional queries to a public CVE database. It is particularly useful for developers, penetration testers, security teams, and students interested in web security. Additionally, PwnDeck offers a web version with over 60 free security tools, making it a versatile choice for anyone looking to enhance their website's security.