Detect installations instantly
See every Meta Pixel on a page the moment it loads.
Meta Pixel debugger for Chrome
Know exactly what fired.
Whatfired gives marketers, developers, and growth teams a clear view of every Meta Pixel event — so you can validate, debug, and launch with confidence.
Free Chrome extension · No account required
LIVE EVENTS● connected
PageViewjust nowvalid
ViewContentjust nowvalid
AddToCart12 sec agovalid
Signal detectedMeta Pixel · 284ms✓
Built for the people behind the signal
AdvertisersAgenciesDevelopersGrowth teams
Everything in focus
Debugging shouldn't
feel like detective work.
Skip the guesswork. Whatfired turns invisible tracking signals into a straightforward, useful view of what's happening on your site.
Validate events in real time
Confirm standard and custom events are firing as intended.
Find what needs fixing
Spot missing events, incorrect IDs, and common setup issues.
Inspect every parameter
Open the debugging details behind each event and signal.
A better way to validate
From first signal
to full confidence.
Whether you're checking a new campaign or troubleshooting a live funnel, Whatfired helps you move from "is it working?" to "I know it is."
Explore the latest updates“
Finally, a simple way to see what our pixels are actually doing.