GA4 Debugger · Chrome Extension

See every GA4 event.
Instantly.

Real-time debugging for Google Analytics 4. Decode, validate and inspect every request, without leaving your browser.

Add to Chrome See it in action ›

The problem

GA4 debugging is noisy, slow,
and scattered across tabs.

Felix Debugger pulls every event, parameter and consent signal into one calm, readable timeline, right inside your DevTools.

Features

Everything you need.
Nothing you don't.

Real-time debugging

Watch GA4 events stream in the moment they fire. No refresh, no guesswork.

Timeline & insights

A clean, chronological view of every interaction with parameters, user properties and context.

Validation & QA

Catch missing parameters, broken naming and invalid values before they reach production.

Event comparison

Diff two events side-by-side. Spot inconsistencies between staging and production in seconds.

E-commerce ready

Inspect items, currencies, transaction IDs and the full purchase funnel, fully expanded.

Advanced tools

Filter, search and export. Inspect Consent Mode signals and page performance in the same view.

Built for clarity

Every event.
Decoded beautifully.

Parameters, user properties, consent state and timing, laid out in a way that makes sense at a glance.

How it works

Three steps. That's it.

  1. 01

    Install the extension

    One click from the Chrome Web Store. No account, no setup.

  2. 02

    Open DevTools

    Find the Felix Debugger panel right next to Console and Network.

  3. 03

    Debug instantly

    Trigger any event and watch it decoded, validated and timestamped. Live.

Why Felix Debugger

One tool.
Better data.

10×Faster debugging
0External tools needed
100%Local processing
All-in-oneQA, validate, export

Privacy

Your data never
leaves the browser.

Felix Debugger runs entirely on your machine. We don't collect events, we don't track usage, we don't talk to a server. Ever.

  • No data collection
  • No tracking, no analytics
  • No external servers
  • Runs 100% locally in your browser

Ready to see
cleaner data?

Free. No account. One click.

Add to Chrome

Community

Made with love
for analytics.

Felix Debugger is a private, non-commercial project — built to make GA4 accessible to everyone. No subscriptions, no paywalls. Just a tool, made with care.

Shape what comes next.

Have an idea or spotted something? Every piece of feedback gets read and considered. You help build what's next.

Share feedback ›

Personal onboarding, on us.

New to Felix Debugger? We'll walk you through it — live, together. No slides, no recordings. Just a real conversation.

Request onboarding ›

With love for the analytics community