> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/web/ui-customization/ui-customization.md).

# Customizing WebViewer UI

Elevate user experience with custom WebViewer UI configurations. Explore APIs to tailor document interactions using web. Optimize UI design efficiently. The Apryse Web SDK streamlines secure, serverle

WebViewer is an open source UI which offers extensive configurability and provides a comprehensive set of APIs enabling developers to customize and manipulate documents in various ways.

WebViewer can be customized through our robust API (recommended), or by forking and customizing the open source Github repo (advanced).

<a href="https://github.com/ApryseSDK/webviewer-ui" class="button primary">View on GitHub</a>

These guides will assist you in determining the optimal approach for implementing your customizations effectively.

## Get started

[Modular UI](/web/ui-customization/modular-ui/getting-started.md) Learn more about how to fully customize your UI with the default UI that WebViewer comes with.

[Customizing header](/web/ui-customization/modular-ui/containers.md#modular-header) To customize the header items when using the modular UI.

[Customizing popup](/web/ui-customization/customizing-popup.md) To customize the popup.

[Customizing style](/web/ui-customization/customizing-styles.md) To customize the style or theme.

[Localization](/web/ui-customization/localization/languages-and-internationalization.md) To leverage i18next for languages and internationalization support.

[Themes](/web/ui-customization/customizing-styles.md) To customize the style or theme.

[Hide/Show DOM elements](/web/ui-customization/hiding-elements.md) To hide DOM elements initially and dynamically.

[Advanced customization](/web/ui-customization/advanced-customization.md) To branch or fork the source code and make your own unique customizations.

[Legacy UI](/web/ui-customization/legacy-ui/legacy-ui.md) Learn more about WebViewer's legacy UI (deprecated).


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