> For the complete documentation index, see [llms.txt](https://docs.nitroapps.co/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.nitroapps.co/fontify/how-to-change-the-font.md).
# Get started
After installing the app from Shopify, please follow the below steps to integrate the app into your theme.
**Step 1**: Enable the app to apply your fonts. Open the app and click the **Enable** button to enable the app.
**Step 2: Select the theme** that you want to apply the fonts from the app to and then click on the **Apply Now** button. The app will show all themes that you installed in your store, you can select the published or draft theme.
Select a theme and click Apply now
By clicking on the **Apply Now** button, you will be directed to the Theme editor to enable the app embed. Simply click on the **Save** button.
{% hint style="info" %}
Note: Please make sure you have done both the above two steps to make the fonts work on your site.
{% endhint %}
---
# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.
## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:
```
GET https://docs.nitroapps.co/fontify/how-to-change-the-font.md?ask=&goal=
```
`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.