The Syncfusion® native Blazor components library offers 70+ UI and Data Viz web controls that are responsive and lightweight for building modern web apps.
.NET PDF framework is a high-performance and comprehensive library used to create, read, merge, split, secure, edit, view, and review PDF files in C#/VB.NET.
We could not access the DOM element in the Blazor platform but we can show a preview image in the Blazor File upload by using JS interop file and implement the requested requirement as mentioned in the below sample.