Predefined (using appearance streams specified in a PDF)

The Predefined appearance rendering type for checkboxes and radio buttons specifies that if available, predefined appearance streams from a PDF will be used. If a predefined appearance stream is not available in the PDF, Custom rendering type is used.

window.onload = function(){ //GcPdfViewer.LicenseKey = "***key***"; let viewer = new GcPdfViewer("#viewer", { fieldsAppearance: { radioButton: "Predefined", checkBoxButton: "Predefined" } }); viewer.addDefaultPanels(); viewer.toolbarLayout.viewer = { "default": ["$navigation", "$zoom"], "mobile": ["$navigation", "$zoom"] }; viewer.zoomMode = 1; viewer.open("/documents-api-pdfviewer/demos/product-bundles/assets/pdf/buttons-appearance.pdf"); }
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>View PDF</title> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="stylesheet" href="./src/styles.css"> <script src="/documents-api-pdfviewer/demos/product-bundles/build/gcpdfviewer.js"></script> <script src="./src/app.js"></script> </head> <body> <div id="viewer"></div> </body> </html>
#viewer { height: 100%; }