---
title: "MAUI PDF viewer with annotation | Nutrient MAUI SDK"
canonical_url: "https://www.nutrient.io/guides/maui/annotations/built-in-ui/"
md_url: "https://www.nutrient.io/guides/maui/annotations/built-in-ui.md"
last_updated: "2026-05-30T02:20:01.341Z"
description: "Learn how to annotate PDFs in your MAUI apps using Nutrient MAUI SDK. Create, edit, and delete annotations directly within the PDF viewer with built-in UI tools."
---

# Annotate PDFs in our MAUI viewer

With Nutrient MAUI SDK, you can create, edit, and delete annotations.

## Creating annotations

To create an annotation:

1. Open a document in Nutrient MAUI PDF viewer.

2. Select an annotation tool from the toolbar.![Annotations available](@/assets/guides/maui/annotations/annotations-on-ui.png)

3. Start drawing an annotation on the document.![Drawn red rectangle annotation](@/assets/guides/maui/annotations/drawn-annotations.png)

## Editing annotations

To edit an annotation:

1. Select the annotation you want to edit.

2. On the annotation toolbar that appears below the main toolbar, choose tools to edit annotation properties such as color, opacity, thickness, and blend mode.![Editing circle annotation](@/assets/guides/maui/annotations/editing-annotations.png)

## Deleting annotations

To delete an annotation, select the annotation you want to delete and press the delete button on the annotation toolbar.![Deleting circle annotation](@/assets/guides/maui/annotations/deleting-annotations.png)

---

## Related pages

- [Flattening PDF annotations in MAUI](/guides/maui/annotations/flatten.md)
- [Manage PDF annotations with Instant JSON](/guides/maui/annotations/instant-json.md)
- [MAUI PDF annotation library](/guides/maui/annotations.md)