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Postback URL Builder

Generate postback URLs and code snippets to track conversions with NextLinks. Choose your preferred integration method.

Configure Your Postback

From Attribution → Events

Variable name or test value

Sale amount for revenue tracking

Choose Integration Method

Generated Code

Simple URL (GET request)

https://nextlinks.ai/api/event?click_id=YOUR_CLICK_ID

cURL

curl "https://nextlinks.ai/api/event?click_id=YOUR_CLICK_ID"

JavaScript (fetch)

// When a conversion happens, send this request
fetch('https://nextlinks.ai/api/event', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    pbk: 'YOUR_POSTBACK_KEY',
    click_id: YOUR_CLICK_ID
  })
});

How to Capture the Click ID

When users land on your page from a NextLink, extract the click_id from the URL:

// Get click_id from URL
const params = new URLSearchParams(window.location.search);
const clickId = params.get('click_id');

// Store in cookie for checkout page
if (clickId) {
  document.cookie = `nl_click_id=${clickId}; max-age=2592000; path=/`;
}

Method Comparison

Server-Side

  • ✓ Most reliable
  • ✓ Not blocked by ad blockers
  • ✓ Real-time tracking
  • ○ Requires backend code

JavaScript Pixel

  • ✓ Easy to implement
  • ✓ Auto-reads URL params
  • ○ Can be blocked
  • ○ Client-side only

Image Pixel

  • ✓ Works everywhere
  • ✓ No JavaScript needed
  • ○ Manual value insertion
  • ○ No error feedback

When to Fire

  • •After successful purchase
  • •On signup completion
  • •After form submission
  • •On thank you page load