Here is the iframe/Embed preview of PDF viewer for WordPress Plugin. This iframe is being generated with pdf-viewer-iframe shortcode. You can use it on any of your wordpress page or posts.

We have another shortcode for displaying a text link to full width pdf viewer. Please have a look at documentation page for more details. You can see iFrame/Embed preview with sidebar.

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Shortcode used for the above output:

[pvfw-embed viewer_id="1718" width="100%" height="750"]