How to Test and Verify Your PixelFlow CAPI Setup

Overview

After completing your PixelFlow setup on Squarespace, Framer, or any other platform, you need to verify that your Conversions API (CAPI) is correctly tracking events and sending data to Meta. This guide walks you through the complete testing process to ensure your setup is working properly, events are firing correctly, and deduplication is functioning as expected.

Prerequisites

• Completed PixelFlow setup with script installed on your website

• Meta Pixel ID and Access Token configured in PixelFlow

• Website published with the PixelFlow script in the header

• Access to Meta Events Manager

• Access to your PixelFlow dashboard

Before You Begin

Step 1: Use the Built-in Setup Test

PixelFlow includes an automatic setup verification tool that checks for incoming events immediately after installation.

1. During the PixelFlow setup wizard, you'll reach Step 4: Test Your Setup

2. The system will display "Awaiting for the events" with a loading indicator

3. Open your website in a new browser tab

4. Navigate through a few pages to trigger PageView events

5. Click any buttons or visit URLs you've configured for tracking

6. Return to the PixelFlow dashboard

What happens during testing:

• PixelFlow polls for events every 10 seconds for up to 1 hour

• The system checks that events have is_sent_successfully: true status

• If an event fails, you'll see the full error message with troubleshooting steps

Step 2: Check PixelFlow Event Logs

The PixelFlow dashboard provides detailed event logs where you can see exactly when and how each event was tracked.

1. Log in to your PixelFlow dashboard

2. Click Events in the left sidebar navigation

3. Select your site from the dropdown (if you have multiple sites)

4. Review the "Detailed Events" table

What to look for in event logs:

• Status column: Should show "Sent" (green checkmark) for successful events

• Event Type: Verify the correct event names (PageView, Lead, Purchase, etc.)

• Tracking URL: Check that URLs match your configured event URLs

• Processed at: Timestamp shows when the event was tracked

• Pixel ID: Confirms events are sent to the correct Meta Pixel

Filtering and analyzing your events:

1. Use the Filters button to narrow down events by:

   • Status (Sent or Error)

   • Event type (Lead, Purchase, PageView, etc.)

   • Tracking URL

2. Adjust the Date Range Picker to view events from different time periods (default is last 3 months)

3. Click the Refresh button to see the latest events

4. Expand any event row to view the full JSON payload sent to Meta

Step 3: Verify Events in Meta Events Manager

After confirming events appear in PixelFlow, check that they're reaching Meta Events Manager correctly.

1. Go to Meta Events Manager

2. Select your Pixel from the Data Sources list

3. Click on the Overview tab

4. Check the activity chart for incoming events

What you should see:

• Recent events appearing in the activity timeline

• Event counts matching (or close to) what you see in PixelFlow logs

• Both Browser events (blue) and Server events (green) on the chart

• Events marked as "Deduplicated" when the same action was tracked by both Pixel and CAPI

Step 4: Test Events Mode (Optional but Recommended)

For real-time debugging and verification, use Meta's Test Events tool to watch events as they arrive.

1. In Meta Events Manager, select your Pixel

2. Click on the Test Events tab

3. Scroll to "Confirm your server's events are set up correctly"

4. Click the Copy button to copy the test event code

5. Go to your PixelFlow dashboard, edit your Pixel settings

6. Enable Test Mode and paste the test event code into the Test Event Code field

7. Update your script on your website and republish

8. Back in Meta Events Manager Test Events, scroll to "Confirm your website's events are set up correctly"

9. Enter your website URL and click Test Events

10. Navigate through your website in the new browser window that opens

11. Return to the Test Events tab in Meta Events Manager

What Test Events shows you:

• Events appear in real-time as you trigger them (within seconds)

• Both Browser and Server events are listed separately

• Deduplication status shows which events were successfully merged

• Event parameters and data quality are visible for each event

For detailed setup instructions, see our guide on Enabling Meta Test Events Mode.

Step 5: Check for Duplicate Events

Verifying that events are not duplicated is just as important as confirming they're firing.

How to identify duplicates:

1. In Meta Events Manager, look at your event activity chart

2. Check if event counts are significantly higher than your actual website traffic

3. In PixelFlow event logs, expand an event and review the JSON payload for the event_id field

4. Check if the same action (e.g., page visit, form submission) appears multiple times with different event IDs

Common causes of duplicate events:

• Multiple Meta Pixel scripts installed: Your website has both PixelFlow and a manually added Meta Pixel script running simultaneously

• Platform native integrations: Squarespace, Webflow, or other platforms have their own Facebook Pixel integration enabled alongside PixelFlow

• Page reload tracking: Users refreshing thank-you pages or checkout confirmation pages trigger the same conversion multiple times

• Multiple tracking rules: The same event is configured using both a tracking URL and a class-based trigger

How to prevent duplicates:

• Only use PixelFlow for Meta tracking—do not add the Pixel separately

• Check your event logs regularly to verify clean tracking

• Avoid setting up the same event type in multiple ways (don't use both event URLs and classes for the same trigger)

• Use event blocking rules to prevent duplicate triggers from page refreshes

For more details, see our article on Why Some Events Are Duplicated.

Step 6: Verify Deduplication is Working

PixelFlow automatically deduplicates events by sending the same event_id through both the browser (Pixel) and server (CAPI). Meta uses this ID to merge duplicate events into a single record.

How to confirm deduplication:

1. In Meta Events Manager, go to the Overview tab

2. Look at the event activity chart—you should see both browser events (blue) and server events (green)

3. Check that total event counts are reasonable (not double what you expect)

4. If using Test Events mode, events will be explicitly marked as "Deduplicated"

PixelFlow manages this process automatically—no manual configuration required. For more background, read Are Events Deduplicated by PixelFlow?

Step 7: Remove Old Meta Pixel Scripts

If you previously had Meta Pixel installed manually or through platform integrations, you must remove it to prevent duplicate tracking.

For Squarespace:

1. Log in to Squarespace and go to Pages

2. Expand Custom Code in the bottom left sidebar

3. Click Code Injection

4. In the Header section, locate and delete any code that starts with <!-- Meta Pixel Code --> or <script>!function(f,b,e,v,n,t,s)

5. Check the Footer section and individual page code injections as well

6. Additionally, go to Settings > Advanced > External Services

7. If a Facebook Pixel ID is entered, remove it

8. Click Save and republish your site

For Framer:

1. Open your Framer project

2. Go to Settings (gear icon in the top right)

3. Select General > Custom Code

4. Look in the Start of <head> tag and End of <body> tag sections

5. Delete any Meta Pixel code (starts with !function(f,b,e,v,n,t,s))

6. Save changes and republish your website

For Other Platforms:

• Check your platform's code injection settings, header/footer scripts, or third-party integration settings

• Remove any Facebook/Meta Pixel code snippets

• Disable native Facebook Pixel integrations if your platform offers them

• Republish your website after making changes

Troubleshooting

What's Next

Once your setup is verified and events are tracking correctly:

• Configure additional event tracking URLs for specific conversions (form submissions, purchases, etc.)

• Set up class-based tracking for buttons and interactive elements (platform-specific guides available)

• Review your event blocking rules to filter bot traffic or prevent duplicate conversions from page refreshes

• Monitor your event match quality score in Meta Events Manager and improve it with proper event parameters

• Start using the data in your Meta ad campaigns to optimize targeting and attribution

Platform-Specific Setup Guides

Need to revisit your initial setup? Check out our platform guides:

• Squarespace Setup

• Framer Setup

• Webflow Setup

• WordPress Setup