> For the complete documentation index, see [llms.txt](https://docs.stackerhq.com/stacker-classic/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.stackerhq.com/stacker-classic/users/previewing-an-app-as-a-user-for-testing.md).

# Previewing an app as a user for testing

Stacker allows you to preview your app as a specific user. You can check that the right permissions are in place and you're happy with the appearance of your app for users.

## Entering Preview Mode

Click **Preview as** in your admin panel

![Screenshot\_2022-06-06\_at\_14.48.44.png](https://support.stackerhq.com/hc/article_attachments/6755319054611/Screenshot_2022-06-06_at_14.48.44.png)

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Choose which user you want to preview as by clicking the down arrow next to the user name on the top left.

![Screenshot\_2022-06-06\_at\_14.49.57.png](https://support.stackerhq.com/hc/article_attachments/6755399773075/Screenshot_2022-06-06_at_14.49.57.png)

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Click the blue **Exit preview** button to exit preview mode.