Wirebrowser – A JavaScript debugger with breakpoint-driven heap search

In plain words

Wirebrowser is a JavaScript debugger that combines network inspection, request rewriting, and heap analysis. Its main feature, Breakpoint-Driven Heap Search, automatically captures heap snapshots when the debugger pauses and searches for specific values or structures, identifying when they appear in memory and which function created them. It also offers Live Object Search to inspect runtime objects using regex and similarity matching, with the ability to modify objects directly during debugging sessions.

written from the facts on this page · September 2026

From the sources

Wirebrowser is a CDP-based runtime instrumentation platform for the browser. Think Frida, but for JavaScript running in Chrome — without monkeypatching. - fcavallarin/wirebrowser

Wirebrowser is a runtime instrumentation platform for JavaScript the browser , built on top of the Chrome DevTools Protocol (CDP). It brings some Frida-like capabilities to Chrome — hooking functions, inspecting runtime state, search memory, and modifying behavior without monkeypatching. Wirebrowser lets you observe, intercept, and modify execution at runtime , even inside closures and non-global scopes that are normally unreachable. Unlike traditional tools, Wirebrowser focuses on causality and execution flow , not just inspection. Hook functions at runtime using CDP breakpoints — without modifying source code. Below is a quick visual tour of Wirebrowser’s most distinctive capabilities.…from github.com

In the maker’s words, at launch

Hi HN! I'm building a JavaScript debugger called Wirebrowser. It combines network inspection, request rewriting, heap snapshots, and live object search. The main experimental feature is BDHS (Breakpoint-Driven Heap Search): it hooks into the JavaScript debugger and automatically captures a heap snapshot at every…

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