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Documentation Index

Fetch the complete documentation index at: https://filla.io/docs/llms.txt

Use this file to discover all available pages before exploring further.

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Where to find these settings

Open the Form Settings dialog (press ⌘, in the editor, or click Form settings in the editor’s top tab bar) and select Tracking.

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UTM parameter capture

UTM parameters are tags added to URLs that identify which campaign, source, or ad brought a visitor to your form. When enabled, Filla reads these parameters from the form URL and saves them to fields in your Airtable table.

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Enabling UTM tracking

Toggle Capture UTM parameters to on. Six field mapping options appear:
ParameterURL keyWhat it tracks
Campaign sourceutm_sourceWhere the traffic came from (e.g., google, newsletter, linkedin)
Campaign mediumutm_mediumThe marketing medium (e.g., cpc, email, social)
Campaign nameutm_campaignThe specific campaign name
Paid keywordutm_termThe paid search keyword
Ad variationutm_contentWhich ad or link variation was clicked
Referrer URL(HTTP referrer)The full URL of the page that linked to your form

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Mapping fields

Each parameter has a field picker. Select an existing single-line text field from your Airtable table, or click the create button to add a new field directly from the picker. When a respondent opens your form from a URL like: 
https://app.filla.io/forms/frmXyz?utm_source=google&utm_medium=cpc&utm_campaign=spring-sale
Filla captures those values and writes them to the mapped fields when the form is submitted. UTM capture happens server-side on submit, so it works even if you don’t put a hidden field on the form itself.

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IP address capture

Record the respondent’s IP address for fraud prevention, geographic analysis, or compliance.
SettingTypeDescription
Capture IP addressToggleRecord the respondent’s IP address on submission.
IP Address FieldField pickerA single-line text field where the IP is stored. You can create a new field from the picker.
Capturing IP addresses may have legal implications under GDPR, CCPA, and other privacy regulations. Make sure your form’s privacy policy discloses IP collection and that you have a lawful basis for processing this data.

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Use cases

  • Campaign attribution: Track which marketing channels drive the most form submissions by mapping UTM parameters to Airtable fields, then building reports in Airtable views.
  • Fraud prevention: Use IP addresses to identify suspicious submission patterns or duplicate entries from the same network.
  • Geographic analysis: Combine IP data with a geocoding tool to understand where your respondents are located.