How to use the PDF module

... I have the module installed, the library in place, the type created, and the display set to PDF... Now what? I selected the PDF as a content type instead of a "Basic Page" or "Article" etc., but the preview/front end of the site does not display the PDF.

What else is required to see the PDF?

Clear and detailed instructions would be helpful for anyone who is encountering this plugin for the first time.

I have created a PDF detailing how to install and initiate this plugin. Please see the zip file of the PDF.

I updated the document with new information on troubleshooting and fixing the blank viewer issue.

I updated the document with new information on troubleshooting and fixing the blank viewer issue.

@pftech, thank you for time on this tutorial.

Unfortunately, I still get the blank viewer with this message twice, on pdf.mjs and viewer.mjs :

Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "". Strict MIME type checking is enforced for module scripts per HTML spec.

May I ask which version of pdf.js you have used? in my example, I tried with the latest, 4.0.379.
The .htaccess you mentioned is the one in sites/default/files?
Could you be more precise on the 3b step : add AddType application/javascript? Maybe share your .htaccess file?
Have you set something special for the custom path to viewer.html (at admin/config/media/pdfjs)?

Thanks for any tip here.

I tried several times to get the PDF module to work...
Now I am using PDF Reader → on Drupal 10 and everything goes well out of the box.