In JSF/JSP you could use this, before writing your response: pdf %>. uses Foxit’s PDF rendering engine, based on our advanced PDF technology. Here is how you can get the add-ons ready to read a PDF. StepLaunch the Firefox browser. We are recording changes to ›. As of now, we have a Uint8Array of a modified PDF. To render it inside your browser, we have to convert it into a Blob. You can also make your custom PDF viewer using the pdfjs library as I mentioned above You can use browser’s native PD