# JQ

> Filter and transform JSON request and response bodies in Proxyman with jq in the JSON and Treeview tabs. Learn how to open the JSON tab and use jq.

## 1. What's it?

* jq is a small language for JSON data. It works like sed does for text: you can slice, filter, map, and transform JSON data.
* Available on Proxyman 5.24.0 or later

> **Tip:**
>
> - You can use the jq filter in the JSON tab and the Treeview tab. To add the JSON tab, click the + button on the Request or Response toolbar and select JSON.

![Proxyman Treeview tab in jq mode with .slideshow.slides[] | {title, type} returning the title and type of each slide](https://proxyman.com/docs/assets/proxyman-treeview-jq.jpg)

_Filter JSON with jq_

## 2. Syntax

* Read the [jq manual](https://jqlang.org/manual/#basic-filters) to learn how to write jq filters.
* You can also use jq to create a [custom column](https://proxyman.com/docs/basic-features/custom-header-column) from a JSON body.