SharePoint 2019 does not generate PDF thumbnails using jQuery or Javascript code

Hi @Tanzim Shaikh ,

You could use sharepoint jsom to get all files, then loop through the files and add the file url to the img element, for example:

var clientContext = new SP.ClientContext();  
//get the library  
var library = clientContext.get_web().getFolderByServerRelativeUrl('/sites/test/DocumentLibrary');  
//get all files in the library  
var files = library.get_files();  
clientContext.load(files);  
clientContext.executeQueryAsync(onSuccess,onFailed);  
var images=""  
function onSuccess(){  
    files.get_data().forEach(file=>{  
        var fileName=file.get_name();  
        //get pdf files only  
        if(/\.pdf$/.test(fileName)){  
        var fileUrl=file.get_serverRelativeUrl();  
        console.log(fileUrl)  
        images+= "<img data-pdf-thumbnail-file='" + fileUrl + "' data-pdf-thumbnail-width='100' data-pdf-thumbnail-height='150' />"  
        }  
    })  
    console.log(images);  
    $('#test').html(images);  
    createPDFThumbnails();  
}  
  
function onFailed(sender, args) {  
    console.log('Failed' + args.get_message() + '\n' + args.get_stackTrace());  
}  

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