Devil Debugger автор Vignesh Miller

Devil Debugger is a lightweight developer tool that lets you instantly toggle outlines around core HTML elements like <div>, <section>, <img>, and more. It helps frontend developers quickly inspect page structure without modifying the DOM.

Toggle borders with a single click

Works on any site (via permissions)

Built for clean debugging with no injected inline styles

Perfect for anyone building or troubleshooting CSS layouts.