Test Facebook Conversion API Events

Browser-side tracking alone is no longer enough. Facebook expects advertisers to send server-side events through the Conversion API, and the quality of those payloads influences attribution, bidding, and compliance.

Use it when onboarding new offers, changing pixels, or debugging hashed identifiers. The response exposes warning messages about missing parameters, hashing mismatches, or rate limits so you can fix issues before the next optimization cycle.

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How this CAPI tester works

The tester sends an HTTPS request to Meta using your credentials and displays the raw JSON response.

Facebook CAPI Tester

Send test events to Facebook Conversion API and verify responses instantly.

What does this tool do?

The Facebook CAPI Tester sends sample Conversion API events and shows Meta's response so you can confirm payloads before deploying.

Why use this tool?

Validate setup

Ensure Pixel ID, access token, and events are working.

Debug server events

Inspect status codes and error messages directly from Meta.

Share proof

Provide clients with live confirmation of Conversion API hits.

FAQ

Facebook CAPI FAQ

Do test events affect reporting?

No. Use Meta's test event code to keep the payload out of production reports while you debug.

Can I include user data?

Yes, and you should. The more hashed identifiers you send, the better Meta can match the conversion to a click.

What if I see a deduplication warning?

Include the same event_id in both browser and server events so Meta can deduplicate them. The tester helps you verify that the event_id is set correctly.

Need help fixing tracking or attribution?

If you're struggling with tracking issues, attribution problems, or broken postbacks, I offer professional tracking setup and audits.

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