# Detect toolbarGroup mode

**URL:** <https://pdfjs.community/t/detect-toolbargroup-mode/984>\
**Category:** Technical Support\
**Created:** [September 14, 2021, 12:21am UTC](https://pdfjs.community/t/detect-toolbargroup-mode/984 "2021-09-14T00:21:19Z")\
**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:** [September 14, 2021, 12:21am UTC](https://pdfjs.community/t/detect-toolbargroup-mode/984/2 "2021-09-14T00:21:23Z")

</div>

**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:
- [Import and export annotations using a database](https://pdfjs.express/documentation/annotation/import-export/database)
- [Customize toolbar in viewer - Header composition](https://pdfjs.express/documentation/ui-customization/customizing-header.8#header-composition)
- [Customize annotation tools - Extend built in tools](https://pdfjs.express/documentation/annotation/customizing-tools.8#extend-built-in-tools)

APIs:
- [UI - setToolbarGroup(groupDataElement, pickTool)](https://pdfjs.express/api/UI.html#.setToolbarGroup__anchor)
- [Core.DisplayMode - new DisplayMode(docViewer, mode, scrollable)](https://pdfjs.express/api/Core.DisplayMode.html#DisplayMode__anchor)
- [Core.Annotations.WidgetFlags - new WidgetFlags(options)](https://pdfjs.express/api/Core.Annotations.WidgetFlags.html#WidgetFlags__anchor)

Forums:
- [OpenElements() not opening elements](https://pdfjs.community/t/openelements-not-opening-elements/138/2)
- [How to add group tool](https://pdfjs.community/t/how-to-add-group-tool/839/1)
- [Moving Tool buttons from Header Toolbar to Header](https://pdfjs.community/t/moving-tool-buttons-from-header-toolbar-to-header/509/1)

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_[View the full topic](https://pdfjs.community/t/detect-toolbargroup-mode/984)._