Akaal Creatives

Saral PDF Preview lets you attach a PDF file to any WooCommerce product. A configurable button appears on the product page and opens the PDF in a clean, distraction-free lightbox — no download, no print, just a smooth in-browser reading experience powered by PDF.js.
Features
<ul>
<li>Upload a PDF per product via a dedicated meta box in the product editor.</li>
<li>Configurable button text (default: “Preview Book”).</li>
<li>Choose from 7 hook locations on the product page — a live visual diagram shows exactly where the button will appear.</li>
<li>Protected mode (default): the real PDF URL is never exposed to visitors; the file is streamed through a signed REST endpoint.</li>
<li>Public mode: uses the standard WordPress attachment URL.</li>
<li>Zoom in / zoom out controls inside the lightbox.</li>
<li>Keyboard accessible — press Escape to close.</li>
<li>Responsive layout on mobile.</li>
<li>No tracking, no external requests, no upsells.</li>
</ul>

Saral PDF Preview for WooCommerce

Add a PDF preview button to WooCommerce product pages. Customers can view a PDF sample in a lightbox without downloading.

Christopher Finke

Inline Preview is a plugin for WordPress that adds a live preview of the current post next to the post editor instead of opening the preview in a new tab.
Problem: When creating a post in WordPress, previewing your post in a separate tab can be slow and/or complicated.
Solution: Show the preview right next to the editor.
It’s just an idea I’m playing with for streamlining the post creation process, and if it feels familiar, it’s probably because it is: through version 2.1, WordPress contained a preview iframe at the bottom of the post editing screen, but this is a more elegant implementation.

Inline Preview

Inline Preview adds a preview of the post you're writing next to the editor when you click Preview (instead of opening it in a new tab).

Saral PDF Preview for WooCommerce vs Inline Preview