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

[system]

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
• Import and export annotations using a database
• Annotation samples for PDF.js Express

APIs:

• CoreControls.BlackBoxAnnotationManager - preloadAnnotations(An)
• Annotations.WidgetAnnotation - setRect(rect)
• Annotations - setCustomDeserializeHandler(annotationClass, deserializeHandler)

Forums:

• Regarding replicating any user PDFJS express
• Adding custom information on shapes and custom items
• How to pan while selecting the multiple annotations? (Urgent Req.)