1. Home
  2. Forum
  3. ASP.NET MVC
  4. HtmlToPdfConverter - Unsupported settings Please use WebKitConverterSettings

HtmlToPdfConverter - Unsupported settings Please use WebKitConverterSettings

Hello Support,


I have integrated the conversion from HTML to PDF in my .NET Framework 4.7.2 web project and everything went well. Now I have upgraded to the latest version 29.2.4 and now I get an error that is triggered in the file HtmlToPdfConverter.cs in line 534.


I have used the Webkit correctly. I have not changed anything in the executable code.


I am sending two images.


Attachment: HtmlToPdfConverterWebkit01_5f4ddab.zip

1 Reply
AM Arumugam Muppidathi Syncfusion Team May 26, 2025 11:10 AM UTC

Hi Dirk,


Thank you for reaching out to Syncfusion support.


We have reviewed the reported issue on our end. Upon further analysis, it appears that you are using the WebKit rendering engine for HTML-to-PDF conversion. Please note that WebKit is a legacy rendering engine with known limitations, especially when handling advanced CSS frameworks like Bootstrap. These limitations can result in rendering inconsistencies.

 

We strongly recommend using the Blink rendering engine for more accurate and reliable HTML-to-PDF conversions. For your reference, please consult our user guide on using the Blink rendering engine:

 

UG:  Converting HTML to PDF | Syncfusion

 

Additionally, we have attached a working sample for your convenience:

 

Sample: html-to-pdf-csharp-examples/ASP.NET MVC at master · SyncfusionExamples/html-to-pdf-csharp-examples · GitHub

 

Please try running this sample on your end and let us know the outcome. If the issue persists, kindly share a modified version of the sample along with the code snippet where the issue is reproduced. This will help us analyze the problem more effectively and provide a prompt resolution.


Regards,
Arumugam M


Loader.
Up arrow icon