Step 1: Install the Wexlyn script

The Universal Script is one tag. It must be in the <head> of every page a visitor can land on: landing pages, checkout, thank-you pages, booking pages and your main site.

Copy the tag

Tracking → Universal Script shows your tag. It looks like this:

<script src="https://t.yourdomain.com/v1/lst/universal-script?ph=YOUR_ACCOUNT_ID&tag=!clicked&ref_url=" async></script>

ph is your account id. tag=!clicked labels every visit with the !clicked tag so you can tell "clicked an ad" traffic apart from everything else.

Where to paste it

Platform	Where
WordPress	Theme header or a "header scripts" plugin
Webflow	Project settings → Custom code → Head code
ClickFunnels / GoHighLevel funnels	Settings → Tracking code → Head
Shopify	theme.liquid inside <head>, and the checkout "additional scripts" box
Framer, Wix, Squarespace	Site settings → Custom code → Head
Custom site	Directly in the HTML template <head>

Google Tag Manager works too, but place the tag as high as possible so it fires before the visitor leaves.

Confirm it works

1. Open your site with ?utm_source=test on the URL.
2. Open the browser developer tools → Console. You should see lines starting with [Wexlyn] describing the page view and parameters captured.
3. In Wexlyn, Tracking → Visitors shows the visit within a minute. The Check script button on the Universal Script page also confirms the tag on any URL you enter.

What the script captures

• Page URL, referrer, previous page and timestamp
• All ad parameters (gc_id, fbc_id, ttc_id, h_ad_id, utm_*, click ids such as gclid and fbclid)
• Emails and phone numbers typed into forms, so the lead can be matched later
• A first-party visitor id (cookie plus local storage)

The script respects Do Not Track and consent flags you set with window.wexlyn.consent(false).