Slash Mark - Subdomain Finder is a browser extension designed for Chrome that enables users to quickly scan for common subdomains of the active tab's domain using DNS-over-HTTPS. This tool is particularly beneficial for security researchers, developers, and power users who need to identify subdomains associated with the currently open website. With a single click, it conducts a rapid scan to uncover commonly used subdomains and potentially hidden assets related to the active domain.

The extension provides results in a clean and organized interface, allowing for straightforward analysis of a site's online presence. It prioritizes efficiency, privacy, and accuracy, ensuring that all lookups are conducted securely without revealing any browsing activity. This makes it an ideal choice for reconnaissance, bug bounty workflows, and domain analysis during routine web exploration.