This demo is using:
Web SDK
JS PDF Layer Separation Demo
A demo of the PDF layer separation capabilities (Optional Content Groups) in WebViewer, a JavaScript-based PDF SDK for web apps. Easily enable/disable different layers of construction drawings like architecture, electrical, and more in PDF with JavaScript.
Please note, this demo only supports PDFs.
Documentation
Detailed information on using the products and features in this demo.
More Resources
Implementation Options
Layer/OCG options are also available in Server SDK.