How to Detect the Tech Stack of Any Website (2026...

If you’ve ever wondered: What tech stack does this website use? Is this site built with React, Next.js, or something else? What analytics or tracking tools are running behind the scenes? You are not alone. Understanding a website’s tech stack is useful for: Developers analyzing architectures Founders studying competitors Marketers identifying tracking tools Agencies auditing client websites In this guide, I will walk you through how to detect the tech stack of any website, using both manual meth