# How to show the annotation on the PDF with selected xfdfString

**URL:** <https://pdfjs.community/t/how-to-show-the-annotation-on-the-pdf-with-selected-xfdfstring/2016>\
**Category:** Technical Support\
**Created:** [September 13, 2022, 12:37pm UTC](https://pdfjs.community/t/how-to-show-the-annotation-on-the-pdf-with-selected-xfdfstring/2016 "2022-09-13T12:37:16Z")\
**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:** [September 13, 2022, 12:37pm UTC](https://pdfjs.community/t/how-to-show-the-annotation-on-the-pdf-with-selected-xfdfstring/2016/3 "2022-09-13T12:37:22Z")

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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 Viewer into an existing Angular project - Setup](https://pdfjs.express/documentation/get-started-viewer/angular/exist-project#setup)
- [Integrating PDF.js Express Plus into an existing Angular project - Setup](https://pdfjs.express/documentation/get-started/angular/exist-project#setup)
- [XFDF format - In PDF.js Express Web Viewer](https://pdfjs.express/documentation/annotation/xfdf#in-pdf.js-express-web-viewer)

APIs:
- [Core.Annotations - setCustomSerializeHandler(annotationClass, serializeHandler)](https://pdfjs.express/api/Core.Annotations.html#.setCustomSerializeHandler__anchor)
- [UndefinedgetInstance( [element])](https://pdfjs.express/api/global.html#getInstance__anchor)
- [PDF.js Express Utilities](https://pdfjs.express/api/utils/index.html#__anchor)

Forums:
- [Server side annotation merging](https://pdfjs.community/t/server-side-annotation-merging/167/7)
- [Problem retrieving annotations from sqlite3](https://pdfjs.community/t/problem-retrieving-annotations-from-sqlite3/1617/1)
- [“PDF.js Express Dev mode” still appearing after valid license](https://pdfjs.community/t/pdf-js-express-dev-mode-still-appearing-after-valid-license/1572/1)

  
  

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