---
title: "Onsite Experiment: Advanced Settings"
slug: "onsite-experiment-advanced-settings"
tags: ["advanced settings", "onsite experiment"]
updated: 2026-04-22T15:12:48Z
published: 2026-04-22T15:12:48Z
canonical: "academy.insiderone.com/onsite-experiment-advanced-settings"
---

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

# Onsite Experiment: Advanced Settings

If you want to create a customized development, you can also add your JavaScript and CSS snippets on the design step of your Onsite Experiment campaign and save your design.

To add CSS snippets,

1. Navigate to **Advanced Settings** > **Edit CSS**.
2. Enter the code snippet.
3. Click **OK**.

To add JavaScript snippets,

1. Navigate to **Advanced Settings** > **Edit JavaScript**.
2. Enter the code snippet.
3. Click OK.

![](https://cdn.document360.io/c6df4583-da94-4cb2-bb8a-be0cbdd11109/Images/Documentation/css.gif)

## Related

- [Create an Onsite Experiment Campaign](/create-an-onsite-experiment-campaign.md)