# How To: Show Checkboxes on Forms

Checkbox attributes let you render form-style selections instead of raw `true` and `false` values.

### Problem

You want to display actual checkbox images instead of `true/false` text.

### Solution

**Standard Checkbox:**

```
{{!Opportunity.Payment_by_Check__c checkbox="true"}} Check
{{!Opportunity.Payment_by_Card__c checkbox="true"}} Credit Card
{{!Opportunity.Payment_by_Wire__c checkbox="true"}} Wire Transfer
```

**Black Style Checkbox:**

```
{{!Opportunity.Terms_Accepted__c checkbox="black"}} I accept the terms and conditions
```

**Radio Buttons:**

```
{{!Opportunity.Shipping_Method_Ground__c checkbox="radio"}} Ground Shipping
{{!Opportunity.Shipping_Method_Express__c checkbox="radio"}} Express Shipping
```

### Checkbox Styles

| Style              | Description                     | Use Case         |
| ------------------ | ------------------------------- | ---------------- |
| `checkbox="true"`  | Dotted border, black checkmark  | General forms    |
| `checkbox="black"` | Solid border, filled background | Formal documents |
| `checkbox="radio"` | Radio button circle             | Single-choice UI |

### Customizing Checkbox Appearance

Add this to your template source:

```
<style type="text/css">
.sdcheckbox {
  width: 15px;
  height: 15px;
  border: 2px solid #000000;
}
</style>
```

Then use checkboxes normally. They inherit your custom styling.

### Tips

* This works in PDF only.
* It displays the current value of the boolean field.
* Checked fields show ☑. Unchecked fields show ☐.


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