# Number input fields

> Let users set a numeric value, with optional minimum, maximum, and step.

Source: https://bluepic.io/help/input-fields/number-input-fields  
Language: en  
Category: input-fields  
Last updated: 2026-06-15

A number input field lets the people using your design generator set a numeric property of the design, such as an element's opacity, rotation, or max font size. You add it through the custom-property route: select the element, click **Select Custom Property** in the add popup, then click the number you want to expose in the Property Panel (see [Adding input fields](https://bluepic.io/help/input-fields/adding-input-fields)).

Three settings shape what users can enter:

- **Min value**: the lowest number allowed.
- **Max value**: the highest number allowed.
- **Increment**: how much each step up or down changes the value.

![](https://imagedelivery.net/mudX-CmAqIANL8bxoNCToA/ca3f68fa-6ece-4e7c-19e9-36c836648600/max)