RadPDFViewer asp.net Ajax large pdf files

[John]

I am using the latest version of asp.net ajax controls 2021.3.914.45.

The pdf loads fine (200 pg. document) but when I try to search or print it takes forever.

Is there any way to make it quicker?

It works Ok on smaller pdf files.

[Vessy]

Hello John,

The search issue is a known problem in the underlying Kendo UI PdfViewer widget and you can vote for and follow it here:

https://feedback.telerik.com/kendo-jquery-ui/1456276-searching-large-pdf-files-causes-page-to-freeze

A possible workaround you can consider until the issue is fixed is to implement the pure PDF.js viewer as a replacement as demonstrated in the blog post below:

• https://mozilla.github.io/pdf.js/
• https://www.telerik.com/blogs/building-an-asp.net-pdf-viewer-with-telerik-window-control-and-pdf-js

Regards,
Vessy
Progress Telerik