Setup
The tracker is a small (~13 KB) JavaScript file that loads asynchronously and never blocks rendering. Pick the method that matches your stack.
Paste this line as high as possible inside the <head> of your site:
<script async
src="https://nalloo.com/nalloo.min.js"
data-site-key="YOUR_SITE_KEY"></script>Swap YOUR_SITE_KEY for your site’s key — you generate it in your dashboard, under Installation.
WordPress — use a header-snippet plugin such as “Insert Headers and Footers” or “WPCode”. Paste the snippet into the Header field and save.
Shopify — Online Store → Themes → Edit code → open theme.liquid and paste the snippet right before </head>.
Webflow — Project Settings → Custom Code → paste the snippet into Head Code → Save & Publish.
Three ways to confirm, most reliable first:
track.php and reload; you should see a POST to https://nalloo.com/api/track.php.nui cookie — DevTools → Application → Cookies → your domain. nui must exist (40 hex characters, 1-year lifetime).