# Custom annotation

**URL:** <https://pdfjs.community/t/custom-annotation/1538>\
**Category:** Technical Support\
**Created:** [April 3, 2022, 7:22am UTC](https://pdfjs.community/t/custom-annotation/1538 "2022-04-03T07:22:04Z")\
**Posts on this page:** 1\
**Showing post:** 3

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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:** [April 3, 2022, 7:22am UTC](https://pdfjs.community/t/custom-annotation/1538/3 "2022-04-03T07:22:09Z")

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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:
- [Real-time collaboration client](https://pdfjs.express/documentation/collaboration/realtime-collaboration-client.8)
- [Creating custom annotations for your viewer - Adding the annotation to a document](https://pdfjs.express/documentation/annotation/custom-annotations.8#adding-the-annotation-to-a-document)
- [Annotation permissions - Custom permissions](https://pdfjs.express/documentation/annotation/annotation-permissions#custom-permissions)

APIs:
- [Core.Annotations.DatePickerWidgetAnnotation - new DatePickerWidgetAnnotation(field, options)](https://pdfjs.express/api/Core.Annotations.DatePickerWidgetAnnotation.html#DatePickerWidgetAnnotation__anchor)
- [Core.Annotations.CustomAnnotation - getContents()](https://pdfjs.express/api/Core.Annotations.CustomAnnotation.html#getContents__anchor)
- [WebViewerInstance - new WebViewerInstance()](https://pdfjs.express/api/7.0/WebViewerInstance.html#WebViewerInstance__anchor)

Forums:
- [Getting error while creating custom annotaion](https://pdfjs.community/t/getting-error-while-creating-custom-annotaion/229/1)
- ["TriangleCreateTool is not a constructor" error while create custom annotation](https://pdfjs.community/t/trianglecreatetool-is-not-a-constructor-error-while-create-custom-annotation/231/1)
- [Use custom annotation tool icon on custom annotation in notes panel](https://pdfjs.community/t/use-custom-annotation-tool-icon-on-custom-annotation-in-notes-panel/402/1)

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_[View the full topic](https://pdfjs.community/t/custom-annotation/1538)._