---
title: "Use Preview Extension to Test Whatfix Content"
slug: "use-preview-extension-to-test-whatfix-content"
updated: 2024-10-07T03:32:39Z
published: 2024-10-07T03:32:39Z
---

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

# Use Preview Extension to Test Whatfix Content

Once Whatfix releases its [Manifest V3](https://developer.chrome.com/docs/extensions/develop/migrate#remotely-hosted-code) compliant extension, if your account relies on Advanced Customization (AC) code for certain features, those specific capabilities won't be visible in preview mode within the Whatfix Studio extension. However, you can use Whatfix’s Preview extension to bypass MV3 so that the AC code is available along with other content for testing.

Whatfix enables you to [use Whatfix Studio to install the Preview extension](/studio/docs/install-whatfix-preview-extension-using-whatfix-studio). This needs to be done only once, after which the Preview extension is updated automatically. For more information, see [FAQs about Preview Extension](/studio/docs/frequently-asked-questions-faqs-about-preview-extension).

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### How does the Preview extension differ from the Preview mode of the Studio extension?

The Preview mode of the Studio extension is used to review and see how your content and widgets appear on your application before the content is in the Production stage. The Preview extension, however, enables you to preview AC code or content that is affected by it. Without the Preview extension, content creators cannot test any AC code.

The Preview extension works in tandem with the Preview mode of the Studio extension to test all content, widgets, and AC code. Once you click the preview icon, if the Preview extension is installed, any content and AC capabilities can be viewed.

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## Related

- [Download Whatfix Preview extension using Whatfix Studio](/install-whatfix-preview-extension-using-whatfix-studio.md)
- [Unable to see content with Preview extension](/unable-to-see-content-with-preview-extension.md)