Webflow has a built-in place for head code that applies to your whole site, so you only add the Converly code once.
Step 1: Copy your install code
In Converly, click Install in the left sidebar and copy the code shown at the top. It is unique to your site. See Install Converly for the full walkthrough.
Step 2: Add it to Webflow
Open your Webflow project and go to Project Settings → Custom Code. Paste your Converly code into the Head Code box and save. Then Publish your site so the change goes live.

Check it works
Submit a test entry through a form on your site, then open the Activity page in Converly. If the code is installed correctly, the event shows up there within a moment.
Paste your own code
Any code shown in a screenshot is only an example. Always paste the exact code from your own Install page, which contains the key that is unique to your site.