Custom JavaScript

Classic Campaign Templates

On the Power plan, you can access the Custom JavaScript editor to add coding to import non-default fonts, add automatic redirects, or any other custom feature that a skilled developer can imagine.

In the Design section of your campaign dashboard, click the “Painter’s Palette” icon then click CSS & JavaScript.

Design - CSS & JavaScript section

Then click Custom JavaScript.

Custom CSS and JavaScript navigation

The JS editor will open to the right where you can type or paste in your custom coding.

Custom javascript editor with code

Click the Save button to save your changes or use the Revert button to clear all of the coding from the editor.

Revert and save buttons in custom coding section

If there are errors in your code, you will see an “x” on that line and hovering over the icon will display a message explaining the issue with the code on that line.

JavaScript error message in editor

AI Site Builder

To add custom JavaScript in Sites that use the AI Builder, go to the Builder section, and click the </> Source tab. From there, select app.js.

Custom code AI Site Builder
Updated on April 10, 2026

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