Optional: send visit history to HubSpot

HubSpot can show which pages a visitor looked at before filling in your form. For that, each submission needs HubSpot's visitor cookie. This small script copies it into the form when the visitor clicks submit.

<script>
document.addEventListener("submit", function (event) {
  var form = event.target;
  var cookie = document.cookie.match(/(?:^|;\s*)hubspotutk=([^;]+)/);
  if (!cookie || form.tagName !== "FORM") return;
  var input = form.querySelector('input[name="hutk"]');
  if (!input) {
    input = document.createElement("input");
    input.type = "hidden";
    input.name = "hutk";
    form.appendChild(input);
  }
  input.value = cookie[1];
}, true);
</script>

In Webflow, open Site settings > Custom code, paste it into Footer code, save, and publish the site.

Good to know

• The cookie only exists when HubSpot's tracking code is also on your site. Without it, submissions still reach HubSpot, just without visit history.
• Custom code needs a paid Webflow site plan.
• HubSpot's tracking code can also collect your Webflow forms by itself ("non-HubSpot forms"), which sends each submission twice. The setup checks of each paired form tell you if that is on.
• Some ad blockers stop the cookie. Those submissions still arrive, without visit history.