Zoom-dependent Layers

This example loads a PDF that contains several optional content layers with visibility depending on the current viewer zoom. Change the zoom factor to see the viewer automatically switch layers.

window.onload = function(){ //DsPdfViewer.LicenseKey = "***key***"; const viewer = new DsPdfViewer("#viewer"); viewer.toolbarLayout.viewer.mobile = viewer.toolbarLayout.viewer.default = ["open", "zoom", "download", "about"]; const layersPanelHandle = viewer.addLayersPanel(); viewer.open("/document-solutions/javascript-pdf-viewer/demos/product-bundles/assets/pdf/zoom-layers.pdf").then(()=> { viewer.leftSidebar.menu.panels.open(layersPanelHandle.id) viewer.leftSidebar.menu.panels.pin(layersPanelHandle.id); }); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Zoom-dependent Optional content layers</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" href="./src/styles.css"> <script src="/document-solutions/javascript-pdf-viewer/demos/product-bundles/build/dspdfviewer.js"></script> <script src="/document-solutions/javascript-pdf-viewer/demos/resource/js/init.js"></script> <script src="./src/app.js"></script> </head> <body> <div id="viewer"></div> </body> </html>
#viewer { height: 100%; }