# UTM parameters

Marketers use UTM parameters to track the effectiveness of online campaigns across traffic sources and publishing media. The parameters identify the campaign that refers traffic to a specific website and can be parsed by analytics tools and used to populate reports.

Copying these parameters and injecting them into your form submissions manually is tedious and error-prone, we built Formtrack to automate this process.

# Installation & usage

Add the Formtrack script.

<script src="https://unpkg.com/@formspark/formtrack" async></script>

Add a data-formtrack attribute to your form element.

<form action="https://submit-form.com" data-formtrack>
  <input type="text" name="message" />
  <button type="submit">Send</button>
</form>

Formtrack will now automatically inject the supported parameters into your HTML form submissions.

# Supported parameters

Parameter	Purpose	Example
ref	Identifies which site sent the traffic, not an official parameter.	ref=producthunt
referrer	Identifies which site sent the traffic, not an official parameter.	referrer=producthunt
utm_source	Identifies which site sent the traffic, and is a required parameter.	utm_source=google
utm_medium	Identifies what type of link was used, such as cost per click or email.	utm_medium=cpc
utm_campaign	Identifies a specific product promotion or strategic campaign.	utm_campaign=spring_sale
utm_term	Identifies search terms.	utm_term=running+shoes
utm_content	Identifies what specifically was clicked to bring the user to the site, such as a banner ad or a text link. It is often used for A/B testing and content-targeted ads.	utm_content=logolink or utm_content=textlink

# Custom parameters

You have the flexibility to define a list of custom parameters.

Include a data-formtrack-params attribute within your form element, and populate it with a comma-separated list of the desired parameters.

<form
  action="https://submit-form.com"
  data-formtrack
  data-formtrack-params="custom_param_1,custom_param_2"
>
  ...
</form>

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