# How to change the icons of the header toolbar

**URL:** https://pdfjs.community/t/how-to-change-the-icons-of-the-header-toolbar/1069
**Category:** Technical Support
**Created:** [October 13, 2021, 1:16pm UTC](https://pdfjs.community/t/how-to-change-the-icons-of-the-header-toolbar/1069 "2021-10-13T13:16:49Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![system](https://canada1.discourse-cdn.com/flex031/uploads/pdfjscommunity/original/1X/ffbcd25c7d423db8d5acd5db201c272f4db306dd.png) [@system](https://pdfjs.community/u/system)
#### Post date: [October 13, 2021, 1:16pm UTC](https://pdfjs.community/t/how-to-change-the-icons-of-the-header-toolbar/1069/2 "2021-10-13T13:16:51Z")

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**Hello, I’m Ron, an automated tech support bot 🤖**

While you wait for one of our customer support representatives to get back to you, please check out some of these documentation pages:

Guides:
- [Hiding/Showing DOM elements in WebViewer UI - List of elements](https://pdfjs.express/documentation/ui-customization/hiding-elements#list-of-elements)
- [Customize toolbar in viewer - Header items - StatefulButton](https://pdfjs.express/documentation/ui-customization/customizing-header.8#statefulbutton)
- [Core engine for WebViewer - Creating your own UI using WebViewer Core](https://pdfjs.express/documentation/ui-customization/core.8#creating-your-own-ui-using-webviewer-core)

APIs:
- [Adding a download button](https://pdfjs.express/api/utils/tutorial-Adding%20a%20download%20button.html#__anchor)
- [UI.Header - get(dataElement)](https://pdfjs.express/api/UI.Header.html#get__anchor)
- [Core.Tools.MarqueeZoomTool](https://pdfjs.express/api/Core.Tools.MarqueeZoomTool.html#__anchor)

Forums:
- [Programmatically highlight area on pdf using coordinates or quads](https://pdfjs.community/t/programmatically-highlight-area-on-pdf-using-coordinates-or-quads/847/1)
- [Load document by Url and save with watermark and html](https://pdfjs.community/t/load-document-by-url-and-save-with-watermark-and-html/502/1)
- [React Native support for PDFJS Express](https://pdfjs.community/t/react-native-support-for-pdfjs-express/677/1)

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