I am developing a web application where I need to modify a PDF by embedding a QR code and displaying its preview while preserving the PDF format. Currently, the only method I have found to achieve this is through iframe and embed tags.

I have also experimented with react-pdf and pdfjsLib, but encountered issues where the preview quality was low due to conversion into an image. My main challenge with using iframe or embed is the limited customization options available. My goal is to display the document page by page and provide navigation buttons for user interaction.