# Can I work with my database or other approaches for real-time annotation instead of firebase?

**URL:** <https://pdfjs.community/t/can-i-work-with-my-database-or-other-approaches-for-real-time-annotation-instead-of-firebase/842>\
**Category:** Technical Support\
**Tags:** pdfjs-express\
**Created:** [June 23, 2021, 12:27pm UTC](https://pdfjs.community/t/can-i-work-with-my-database-or-other-approaches-for-real-time-annotation-instead-of-firebase/842 "2021-06-23T12:27:47Z")\
**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:** [June 23, 2021, 12:27pm UTC](https://pdfjs.community/t/can-i-work-with-my-database-or-other-approaches-for-real-time-annotation-instead-of-firebase/842/2 "2021-06-23T12:27:50Z")

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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)
- [Import and export annotations using a database](https://pdfjs.express/documentation/annotation/import-export/database)
- [Annotation samples for PDF.js Express](https://pdfjs.express/documentation/annotation/samples)

APIs:
- [CoreControls.BlackBoxAnnotationManager - preloadAnnotations(An)](https://pdfjs.express/api/CoreControls.BlackBoxAnnotationManager.html#preloadAnnotations__anchor)
- [Annotations.WidgetAnnotation - setRect(rect)](https://pdfjs.express/api/Annotations.WidgetAnnotation.html#setRect__anchor)
- [Annotations - setCustomDeserializeHandler(annotationClass, deserializeHandler)](https://pdfjs.express/api/Annotations.html#.setCustomDeserializeHandler__anchor)

Forums:
- [Regarding replicating any user PDFJS express](https://pdfjs.community/t/regarding-replicating-any-user-pdfjs-express/239/2)
- [Adding custom information on shapes and custom items](https://pdfjs.community/t/adding-custom-information-on-shapes-and-custom-items/486/2)
- [How to pan while selecting the multiple annotations? (Urgent Req.)](https://pdfjs.community/t/how-to-pan-while-selecting-the-multiple-annotations-urgent-req/266/1)

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