---
title: "Custom PDF viewer in Flutter | Nutrient SDK"
canonical_url: "https://www.nutrient.io/guides/flutter/user-interface/"
md_url: "https://www.nutrient.io/guides/flutter/user-interface.md"
last_updated: "2026-05-26T07:56:07.439Z"
description: "Enhance your Flutter app UI with our expert tips and tricks for a seamless user experience. Discover the ultimate guide here!"
---

# Customizing our PDF viewer in Flutter

Nutrient Flutter SDK makes it easy to customize the user interface by hiding buttons or toolbars, localizing for other languages, and more.

## Key capabilities

- **Toolbars** — Hide or add new custom buttons

- **Appearance styling** — Customize colors and themes per platform

- **Localization** — Make your app available in other languages

## Guides for customizing the UI

**[Main toolbar](https://www.nutrient.io/guides/flutter/user-interface/toolbars/main-toolbar.md)**\
How to show or hide toolbar buttons

**[Annotation toolbar](https://www.nutrient.io/guides/flutter/user-interface/toolbars/annotation-toolbar.md)**\
How to customize the annotation toolbar

**[NutrientView](https://www.nutrient.io/guides/flutter/user-interface/nutrientview.md)**\
How to adjust the layout of `NutrientView`

**[Configuration](https://www.nutrient.io/guides/flutter/user-interface/configuration.md)**\
How to configure the user interface properties

**[Localization](https://www.nutrient.io/guides/flutter/user-interface/localization.md)**\
How to localize your app for a variety of languages

**[UI visibility](https://www.nutrient.io/guides/flutter/user-interface/ui-visibility.md)**\
How to show or hide the user interface

**[Appearance styling](https://www.nutrient.io/guides/flutter/user-interface/appearance-styling.md)**\
How to customize colors and themes on Android and iOS

**Call to Action**

Start your free trial for unlimited access and expert support.

[Learn More](https://www.nutrient.io/sdk/flutter/getting-started.md)
---

## Related pages

- [Localization: Change languages in our Flutter PDF viewer](/guides/flutter/user-interface/localization.md)
- [Customizing PDF viewer styling in Flutter](/guides/flutter/user-interface/appearance-styling.md)
- [Configuring PDF view properties](/guides/flutter/user-interface/configuration.md)
- [Show or hide the UI in our Flutter viewer](/guides/flutter/user-interface/ui-visibility.md)
- [NutrientView Flutter widget](/guides/flutter/user-interface/nutrientview.md)
- [View configuration reference](/guides/flutter/user-interface/view-configuration.md)

## Pages in this section

- [Customizing the toolbar in our Flutter viewer](/guides/flutter/user-interface/toolbars/main-toolbar.md)
- [Customizing the annotation toolbar in our Flutter viewer](/guides/flutter/user-interface/toolbars/annotation-toolbar.md)