When using the Telerik.Documents.ImageUtils.JpegImageConverter default implementation in Blazor WebAssembly application the Magick.NET library doesn't load all of its assemblies.

Workaround:
Create a custom implementation of the JpegImageConverterBase class: Create Custom JpegImageConverter in .Net Standard.

When importing a document containing an invalid PDF object dictionary key an exception is thrown.

When importing a not embedded TrueType Font defined as Type 1 subtype Font an InvalidCastException is thrown.

In PDF document:

<< /BaseFont /Arial /Encoding 21 0 R /Name /F13 /Subtype /Type1 /Type /Font >>

In Adobe Reader:

Wrong encoding is used when the PDF file contains font with custom encoding

Workaround:

foreach (var widget in field.Widgets)
{
    widget.TextProperties.Font = FontsRepository.Helvetica;
}