Hi Srividhya,
Thank you for contacting Syncfusion support.
We already checked the performance of HTML to PDF converter and it is already optimized. However, you can reduce the performance of HTML converter by disabling the features in converter settings such as hyperlink, JavaScript, split text lines, split images, bookmarks, toc etc.,
If you are facing any unwanted delay in HTML to PDF conversion, kindly share us the complete HTML file, complete code snippet, environment details such as OS, bit version, RAM, culture settings etc., it will be helpful for us to analyse and assist you further on this.
Regards,
Gowthamraj K