InstaDebugger is a free Chrome browser add-on developed by Xaival. This tool allows users to pause web pages by triggering an alert() function upon opening. By halting the execution of all web pages with an automatic alert(), users can inspect the page in a state similar to a debugger. This feature provides a unique way to analyze and debug web content effectively.

With InstaDebugger, users can easily simulate a paused state on web pages, enabling them to closely examine elements and behaviors. This add-on is a valuable tool for developers and testers seeking to troubleshoot and understand webpage functionalities efficiently.