Niilo Poutanen

SlidePDF renders PDFs in the browser and shows them in a swipeable slider. Single-page view is also supported for linking to a specific page.
<ul>
<li>Shortcode: <code>[slidepdf src="https://example.com/file.pdf"]</code>. Add <code>page="3"</code> for a single page.</li>
<li>Elementor: add the SlidePDF widget and pick a PDF (Media Library or URL).</li>
<li>Global behaviour and colours are set under Tools → SlidePDF. The Elementor widget can override specific configurations or styles.</li>
</ul>

SlidePDF

Embed PDFs onto your site in a slide view.

veradeveloper

Simple PDF Viewer allows you to view PDF documents with Google Document Viewer.
Documentation
<ol>
<li>
To change global settings, go to “Settings” -> “Simple PDF Viewer”.
</li>
<li>
To insert PDF to the post/page, go to your post/page and click the button above the WP editor “Add PDF”. After that, choose pdf file from media. After in popup window you can choose settings for this document. Click Save.
</li>
</ol>
Get PRO Version https://sellfy.com/p/a3uM/ 
With PRO version you can: 
1. Enable external link to the file 
2. Choose other file for download button (external or from mediafiles) 
3. Choose oter document veiwer 
4. Use not only PDF files (.doc, .docx, .xlsx, .xml, .ppt)

Simple PDF Viewer

Super

Simple PDF Viewer allows you to view PDF documents with Google Document Viewer.

SlidePDF vs Simple PDF Viewer