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Hidden form fields and pre-population

Hidden form fields give you another layer of customization to use with your integration.


Access hidden form fields

Hover over any form widget on your page or pop-up and click Edit Integrations to access its settings, which will appear in the left-hand sidebar.

NOTE: If you don’t yet have a form to use, you can add a form widget to your page, or create a pop-up—which includes a form widget by default. 

Creating hidden fields

You can create hidden fields in two ways. 

Inside email service providers

Some email service providers (ESP) will allow you to create or define hidden fields. In the example below, “Source” was set up as hidden within MailChimp. 

NOTE: In order for hidden fields from some ESPs to appear in Leadpages, they must have a pre-defined default value. Please check with the service you use for full details on creating hidden fields in their system.

Inside Leadpages

To hide a field manually from within Leadpages:

  1. Under ② FIELDS in the form settings, click the field you'd like to hide to open its options.
  2. Then, check the "This is a hidden field" checkbox, enter a default value and click Done.
    You can choose any default value the field supports, which will be submitted alongside information your visitor provides. 

Pre-populating Hidden Fields

Each hidden field created in Leadpages must have a default value, but you can also dynamically pass in values from a URL parameter (such as one provided by your email service provider or ad software). To set it up, type in your URL variable in the URL Mapping field. 

For instance, our page might be at a URL from an ad that includes a variable like so: In this case, we’d put ad_campaign as our URL variable (without the question mark). 

When someone opts into the page on that URL, the hidden field would be populated with “facebook” so we could track which ad campaign our opt-in came from. 

NOTE: The parameter UTM cannot be used to pre-populate within Leadpages. This will cause direct issues with Google Analytics.

(Updated January 24, 2019)

Please let us know if you have additional questions.

You can always file a support ticket if you have additional questions by clicking the ? support button at the top-right corner of your account dashboard or by clicking here to file a support ticket

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