> For the complete documentation index, see [llms.txt](https://docs.powerfulform.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.powerfulform.com/field-types/input-fields/hidden.md).
# Hidden
Attach information to every submission without asking the visitor for it.
A Hidden field never appears on the form. It carries a value you decide, and that value arrives with the submission alongside the visitor’s answers
> **📌 Plan:** Not available on the Free plan. The tile is grayed out in the element picker. See Plans and billing.
## 🔧 How to Set It
In the form editor, click **Add element** > pick **Hidden**.
The field is added and its settings open on the left.
{% hint style="info" %}
See more [Add and arrange elements](broken://pages/BGbUu5Y7FlIp5LYqEwN9).
{% endhint %}
## 🔄 How It Works
The value is stored with the submission under the field’s **Label**, exactly like a visible answer. It appears in **Submissions**, exports, and any integration you map it to. It reaches your emails only once you add its variable to the template.
## ⚙️ Settings
Only the settings specific to this field are listed here. **Label**, **Placeholder**, **Description**, **Required**, **Hide label**, **Column width**, **Conditional display** and the rest of the shared settings work the same on every field.
### **🔀 Data Type**
Decides where the value comes from.
* **Fixed value** *(default)* — you type the value, and can include variables.
* **Dynamic value** — the value depends on what the visitor answered in another field.
> **📌 Note:** A Hidden field has no **Required**, **Column width** or **Conditional display**, because it’s never on the page. Give each hidden field a **Label** you’ll recognize, since it’s the only thing telling two of them apart in your submissions.
### 📌 Show Fixed Data
Store the same text every time. Set **Data type** to **Fixed value**, then type your text in **Assign value**.
**Example:** A wholesale form stores `Wholesale enquiry` in a hidden field labeled **Form type**. Every submission is tagged the same way, so you can filter by it later.
### 🔗 Show Dynamic Data with Variables
Variables fill in the real value when the visitor submits. Click a variable under **Assign value** to copy it, then paste it into the box.
**Example:** Store `{{-page.href-}}` to see which page each enquiry came from. For a product enquiry, mix text and variables in one box: `Product: {{-product.title-}} | Page: {{-page.href-}}`.
### 📣 Capture UTM Data
UTM variables read the tracking values from the address the visitor arrived on. They tell you which campaign brought each lead.
Variable
Stores
utm_source
Where the visitor came from (e.g. facebook)
utm_medium
The channel (e.g. email, cpc)
utm_campaign
The campaign name (e.g. black-friday)
utm_content
Which ad or link variant
utm_term
The keyword, for paid search
**Example:** You share `yourstore.com/wholesale?utm_source=facebook&utm_campaign=black-friday`. A hidden field set to `{{-utm.source-}}` stores **facebook** with every submission from that link.
> **📌 Note:** UTM variables are only filled when the visitor’s address carries them. A direct visit has no UTM values, so the field comes through empty. Use one hidden field per value you want to track.
### 🕐 Show the Submission Date and Time
Set **Assign value** to `{{submitted_at}}` to store the exact date and time the visitor submitted.
{% stepper %}
{% step %}
### Add hidden datetime field
* add hidden field to the form
* assign fixed value `{{submitted_at}}`
{% endstep %}
{% step %}
### Add the hidden field to the email template
* open the email template
* paste the variable of the hidden field
{% endstep %}
{% endstepper %}
### 🧭 Value Based on an Answer
Set **Data type** to **Dynamic value** when the hidden value should depend on a visitor’s answer.
1. Add and label the source field first (e.g. a *Department* dropdown).
2. Under **When**, pick that field.
3. For each rule, set **is** (the answer to match) and **then value** (the text to store). Click **Add new rule** for more.
4. Fill in **Default value**, which is stored when no rule matches.
## 📮 Route Admin email by answer
[Learn more](https://docs.powerfulform.com/email-notifications/admin-emails-with-conditions)
## Next steps
* [Find which page a submission came from](/submissions/view-submissions.md) for the most common use of a fixed hidden value.
* [Insert form answers into an email](/email-notifications/email-template-editor.md#dynamic-variables) to put a hidden value into your notifications.
* [View submissions](/submissions/view-submissions.md) to check the values that are coming through.
