Performance Optimization Tips

Last updated: January 30, 2026 • 8 min read

Best practices for optimizing tracking performance to minimize impact on page load times and user experience.

Introduction

Performance optimization ensures your tracking implementation doesn't negatively impact page load times or user experience. This guide covers best practices for optimizing server-side tracking performance.

Script Placement

Place tracking scripts correctly:

Head Section: Place initialization script in <head> for early loading
Async Loading: Load tracking script asynchronously to avoid blocking page render
Non-Blocking: Ensure tracking doesn't delay page load

<!-- ServerTrack Init Code - Place in <head> -->
<script>
(function(w, d, u, k) {
    w.ServerTrack = w.ServerTrack || {};
    w.serverTrackQueue = [];
    w.st = function() { w.serverTrackQueue.push(arguments); };
    var s = d.createElement('script'); 
    s.async = 1;  // Async loading
    s.src = u + '?key=' + k; 
    var h = d.getElementsByTagName('script')[0]; 
    h.parentNode.insertBefore(s, h);
})(window, document, 'https://data.yoursite.com/tracker.js', 'your_auth_key');
</script>

Async Loading

Load tracking scripts asynchronously:

Non-Blocking: Async scripts don't block HTML parsing
Faster Load Times: Page continues loading while script loads
Better UX: Users see content faster

Event Batching

Consider event batching for multiple events:

Multiple Events: Send multiple events efficiently when possible
Reduced Requests: Fewer HTTP requests improve performance
Queue Management: ServerTrack handles queuing automatically

Note: For most use cases, sending events individually is fine. ServerTrack's queue system handles batching efficiently.

Reducing Payload Size

Minimize payload size:

Essential Data Only: Include only necessary parameters
Avoid Redundant Data: Don't duplicate information unnecessarily
Optimize Arrays: Only include relevant items in contents arrays

Performance Monitoring

Monitor tracking performance:

Page Load Times: Monitor impact on page load times
Network Requests: Check network tab for tracking requests
Error Rates: Monitor error rates in Event Logs
User Experience: Ensure tracking doesn't affect user experience

Error Handling

Implement efficient error handling:

Non-Blocking Errors: Don't let tracking errors break user experience
Silent Failures: Fail silently when possible
Logging: Log errors for debugging without impacting performance

Lazy Loading

Consider lazy loading for non-critical events:

ViewContent: Can be deferred slightly if needed
Critical Events: Purchase and conversion events should fire immediately
User Interaction: Fire events on user interaction when appropriate

Best Practices Summary

Async Script Loading: Load tracking scripts asynchronously
Non-Blocking Implementation: Don't block page load
Essential Data Only: Include only necessary data
Efficient Error Handling: Fail gracefully without breaking UX
Monitor Performance: Regularly check impact on page load times

Summary

Performance optimization tips:

Load tracking scripts asynchronously
Place scripts in <head> for early initialization
Include only essential data in events
Implement non-blocking error handling
Monitor performance impact regularly

Optimizing performance ensures tracking doesn't negatively impact user experience or page load times.