Developer builds cookie-free lead attribution for static Nuxt sites without consent banners

A developer running a static Nuxt site with cookieless analytics built a lightweight first-touch attribution system to identify where contact form leads originate. The solution uses localStorage instead of cookies, capturing the external referrer, landing page path, and UTM parameters the first time a visitor arrives. Because the data is written only once, returning visitors are still attributed to their original source rather than a later direct visit. The client-side Nuxt plugin avoids server-side rendering conflicts, and a try-catch wrapper prevents localStorage errors in private browsing from breaking the page. On form submission, the stored source data is sent with the contact payload and formatted server-side into a readable label for notification emails.