Hello Zubair Ahmad,
We have implemented several improvements in RadRichTextBox images export to PDF in the latest releases. You may try the latest version of the product and see if the issue is already fixed.
If you still reproduce the image quality loss after the upgrade, you may send us a sample docx
file that you are trying to convert to PDF. This way we will be able to research the concrete case on our side.
I hope this is helpful.
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