Webflow Forms
UTM tracking for Webflow Forms
Capture attribution data in every Webflow Forms submission, automatically.
Your website
Script installed
SourceTag
Captures attribution
Webflow Forms
Hidden fields sent
Your tools
Data arrives tagged
Your website
Script installed
SourceTag
Captures attribution
Webflow Forms
Hidden fields sent
Your tools
Data arrives tagged
The problem
Webflow Forms captures what people type into your forms, but misses the context. How did that visitor find your site? Which ad did they click? That data exists in the URL and referrer, but Webflow Forms can't see it on its own.
How to set it up
Add hidden fields to your Webflow Forms forms. SourceTag's script spots those fields and fills them in when someone submits. Channel, source, campaign, click IDs, and landing page all come through without the visitor doing anything extra.
Install SourceTag on your site
Add the SourceTag script tag to your site header.
Add hidden fields to your Webflow Forms form
In Webflow Forms, add hidden fields named st_fc_channel, st_fc_detail_1, st_fc_detail_2, etc. See the full field list in your SourceTag dashboard.
Submit a test form
Visit your site with ?utm_source=test&utm_medium=cpc and submit a form. Check the submission for attribution data.
Where your data ends up
Webflow Forms sends form data to your CRM, email tool, or wherever you've connected it. The attribution data rides along in the hidden fields.
Frequently asked questions
The core fields are st_fc_channel, st_fc_detail_1, st_fc_detail_2, st_fc_detail_3, and st_fc_detail_4 for first click data. There are about 20 fields total covering first click, last click, landing pages, and click IDs. See the setup guide for the full list.
Yes. Hidden fields can sit on any step. SourceTag populates them regardless of which step they're on.
You just add hidden fields. Your existing visible fields stay exactly as they are. Visitors don't see any difference.
Wherever your Webflow Forms submissions go. If they feed into a CRM, email tool, or spreadsheet, the attribution data rides along as extra fields.
Related integrations
Done-for-you attribution. Set up in 5 minutes.
14-day free trial. No credit card required. Every lead tagged with the source that created it.