How to Use Detected Attributes on Privy
Emel DalabasmazPrivy still auto-stamps data onto a contact at signup. The current name is Profile Attributes, under a display's Settings > Show Advanced Settings. The 2023 "hidden field on the form" flow is not in the current docs. Vendor source: Audience Targeting + Settings (Profile Attributes section).
The screenshot above is the 2023 hidden-field UI. Use it as a map, not as a click path.
What can you stamp onto a contact?
From Privy's list:
- Coupon code they received
- Sessions count (a session ends after 30 minutes idle)
- Pageviews, all time
- Pageviews, this session
- Current URL at signup
- Signup date
- UTM medium on the URL they submitted from
- A custom field you define, for later filters or for a linked ESP
Browser and approximate location still exist as targeting dimensions (device, country, postal code). They are not listed as Profile Attributes in the current article. Do not expect a "browser" stamp unless you add it as a custom field yourself.
How do you turn them on?
- Open the display > Settings.
- Click Show Advanced Settings.
- Open Profile Attributes and enable the ones you want.
- Save and keep the display published.
Signup tagging is next to this card if you would rather apply a Privy Tag than a custom field. Tags can trigger Flows.
Where do the values show up?
- The contact record in Privy
- A CSV export
- The linked account (Klaviyo, Mailchimp and others) if that display has a sync rule
They only exist after a signup. Targeting a visitor by country or URL is a different Settings card (Audience Targeting) and does not need a form submit.
Frequently asked questions
Can I still add a hidden field to the form?
Not as a documented Classic/new-builder step in 2026. Use Profile Attributes, a custom field on the form the visitor actually fills, or a tag.
Will UTM medium fill if the visitor typed the URL?
No. There has to be a UTM on the landing URL. Direct traffic will not invent one.
Product: Privy. Targeting how-to: How to target the right audience on Privy.
Written and reviewed by
SEO Executive at Flatart
Emel Dalabasmaz graduated in Advertising and Public Relations from Anadolu University. She began in social media and carried that grounding — content, brand communication and performance — into SEO. For more than ten years she has worked on growth for brands across a range of industries, pairing a communications perspective with data and technical analysis to build a digital presence that holds up over time.
- Education
- Advertising and Public Relations, Anadolu University
- Writes about
- Popup builders, Conversion rate optimization, On-site messaging, SaaS pricing research, SEO, Technical SEO, Content strategy, Digital marketing