# Webviewer not scrolling downwards automatically when doing annotation

**URL:** https://pdfjs.community/t/webviewer-not-scrolling-downwards-automatically-when-doing-annotation/1321
**Category:** Technical Support
**Tags:** pdfjs-express
**Created:** [January 21, 2022, 11:15am UTC](https://pdfjs.community/t/webviewer-not-scrolling-downwards-automatically-when-doing-annotation/1321 "2022-01-21T11:15:59Z")
**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: [January 21, 2022, 11:16am UTC](https://pdfjs.community/t/webviewer-not-scrolling-downwards-automatically-when-doing-annotation/1321/3 "2022-01-21T11:16:04Z")

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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:
- [Integrating PDF.js Express Plus into a new Blazor project - Initial setup](https://pdfjs.express/documentation/get-started/blazor/new-project#initial-setup)
- [Adding your license key](https://pdfjs.express/documentation/get-started-viewer/add-license-key)
- [Integrating PDF.js Express Plus with Svelte - Initial setup](https://pdfjs.express/documentation/get-started/svelte#initial-setup)

APIs:
- [Annotations - setCustomSerializeHandler(annotationClass, serializeHandler)](https://pdfjs.express/api/7.0/Annotations.html#.setCustomSerializeHandler__anchor)
- [UI - downloadPdf( [options])](https://pdfjs.express/api/UI.html#.downloadPdf__anchor)
- [Core.Annotations.WidgetAnnotation - addCustomAppearance(doc [, options])](https://pdfjs.express/api/Core.Annotations.WidgetAnnotation.html#addCustomAppearance__anchor)

Forums:
- [Merging the XFDF file into a PDF document](https://pdfjs.community/t/merging-the-xfdf-file-into-a-pdf-document/644/1)
- [Is it possible to manipulate the annotation coordinates of a drawn annotations while modifying it?](https://pdfjs.community/t/is-it-possible-to-manipulate-the-annotation-coordinates-of-a-drawn-annotations-while-modifying-it/259/1)
- [Navigating to a certain pdf page number using Hyperlinks on the pdf file not working on pdfjs webviewer](https://pdfjs.community/t/navigating-to-a-certain-pdf-page-number-using-hyperlinks-on-the-pdf-file-not-working-on-pdfjs-webviewer/1234/1)

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