API Reference > imodeljs-frontend > IModelApp > WebViewerApp WebViewerApp Class Beta The frontend of apps with a shared backend for visualization of iModels. WebViewerApps may only open iModels readonly, and may not use Ipc. Methods Name Description constructor(): WebViewerApp shutdown(): Promise<void> Static startup(opts: WebViewerAppOpts): Promise<void> Static Defined in core/frontend/src/WebViewerApp.ts Line 34 Last Updated: 29 November, 2022