Specify your own set of predefined stamps on server side.

window.onload = function(){ //DsPdfViewer.LicenseKey = "***key***"; const viewer = new DsPdfViewer("#viewer", { workerSrc: "/document-solutions/javascript-pdf-viewer/demos/product-bundles/build/dspdfviewer.worker.js", supportApi: getSupportApiSettings({token: "support-api-demo-net-core-token-2021-custom-stamps-sample"}), restoreViewStateOnLoad: false, suppressInfoMessages: true, suppressErrorMessages: true }); viewer.addDefaultPanels(); viewer.addAnnotationEditorPanel(); viewer.onAfterOpen.register(function() { viewer.layoutMode = 1; viewer.zoomMode = 1; }); viewer.toolbarLayout.viewer = { default: ['save', '$navigation', '$split', 'text-selection', 'pan', '$zoom', '$fullscreen', 'download', 'print', 'rotate', 'view-mode', 'hide-annotations', 'doc-properties', 'about'], mobile: ['save', '$navigation', '$split', 'text-selection', 'pan', '$zoom', '$fullscreen', 'download', 'print', 'rotate', 'view-mode', 'hide-annotations', 'doc-properties', 'about'], fullscreen: ['$fullscreen', 'save', '$navigation', '$split', 'text-selection', 'pan', '$zoom', '$fullscreen', 'download', 'print', 'rotate', 'view-mode', 'hide-annotations', 'doc-properties', 'about'] }; viewer.toolbarLayout.annotationEditor = { default: ['open', 'edit-select', '$split', 'edit-stamp', '$split', 'edit-undo', 'edit-redo', 'save'], mobile: ['open', 'edit-select', '$split', 'edit-stamp', '$split', 'edit-undo', 'edit-redo', 'save'], fullscreen: ['$fullscreen', 'edit-select', '$split', 'edit-stamp', '$split', 'edit-undo', 'edit-redo', 'save'] }; viewer.applyToolbarLayout(); viewer.open("/document-solutions/javascript-pdf-viewer/demos/product-bundles/assets/pdf/realestate-lease.pdf"); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>Custom predefined stamps (Server)</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/product-bundles/build/wasmSupportApi.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%; }