---
title: "Utility"
slug: "utility-filter"
updated: 2026-02-25T18:19:58Z
published: 2026-02-25T18:19:58Z
canonical: "learn.servitly.com/utility-filter"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://learn.servitly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Utility

A set of general purpose functions and filters.

![Utility](https://components-manager.servitly.com/components/Utility_1/IMAGES/_screenshot?owner=AG_Servitly)

# Filter Variants

The set of predefined filter variants that can be used to format values.

| *asString* | Converts the input value to a string. **Name**: *asString* **Input Types**: *ANY* **Output Type**: *STRING* |
| --- | --- |
| *Default Value* | Converts a null, empty string or undefined to a default value (e.g. N/A). **Name**: *toDefault* **Input Types**: *ANY* **Output Type**: *HTML* **Parameters** `toDefault:{"def": "N/A"}` \| *Default Value* \| The default value to be displayed. **Name**: def **Type**: STRING \\| Optional \| \| --- \| --- \| |
| *Default Value* | The default value to be displayed. **Name**: def **Type**: STRING \| Optional |
| *Format JSON* | Converts the input value to a JSON formatted text. **Name**: *formatJson* **Input Types**: *ANY* **Output Type**: *HTML* ![](https://components-manager.servitly.com/components/Utility_1/IMAGES/variants/formatJson/_image?owner=AG_Servitly) |