Chrome DevTools Protocol (CDP) Explained: The Browser Debugging API Behind DevTools
Every web developer uses Chrome DevTools. We inspect elements, read console logs, watch network requests, throttle CPU, emulate mobile screens, record performance traces, check storage, debug JavaScript, and capture screenshots. Most of that feels like a browser UI. Under the hood, there is a protocol. That protocol is Chrome DevTools Protocol, usually shortened to CDP. CDP is the browser debugging API that lets tools instrument, inspect, debug, and profile Chrome, Chromium, and other Blink-based browsers. Chrome DevTools itself uses this protocol. Many automation and debugging tools also build on it directly or indirectly. ...