MaxtDesign

<p>MaxtDesign PDF Viewer is a performance-focused PDF embedding solution for WordPress. Unlike other PDF plugins that load heavy JavaScript libraries upfront, this plugin uses a smart lazy-loading approach that keeps your pages fast.</p>
<h4>Key Features</h4>
<ul>
<li>Instant Preview – Server-generated WebP preview images display immediately</li>
<li>Zero Layout Shift – CSS aspect-ratio reserves exact space before content loads</li>
<li>Lazy Loading – Full PDF.js viewer loads only when needed</li>
<li>Gutenberg Block – Native block editor integration</li>
<li>Shortcode Support – Works in classic editor and widgets</li>
<li>Keyboard Navigation – Full keyboard and screen reader accessibility</li>
<li>Mobile Optimized – Touch gestures for page navigation and zoom</li>
</ul>
<h4>Performance</h4>
<ul>
<li>Initial page load: < 10KB JavaScript</li>
<li>First paint: < 200ms</li>
<li>Full viewer: Loads on-demand</li>
<li>Preview images: Optimized WebP format</li>
</ul>
<h4>How It Works</h4>
<ol>
<li>Upload a PDF to your media library</li>
<li>The plugin automatically extracts the first page as a WebP preview</li>
<li>Insert the PDF using the Gutenberg block or shortcode</li>
<li>Visitors see an instant preview image</li>
<li>Clicking “View Document” loads the interactive PDF.js viewer</li>
</ol>
<h4>Requirements</h4>
<p>For automatic preview generation, your server needs one of:</p>
<ul>
<li>ImageMagick with PDF support (recommended)</li>
<li>Ghostscript</li>
</ul>
<p>The plugin will detect available options and use the best method automatically.</p>
<h4>Shortcode Usage</h4>
<p>[pdf_viewer id=”123″]</p>
<p>Attributes:</p>
<ul>
<li>id (required) – Attachment ID of the PDF</li>
<li>width – CSS width value (default: 100%)</li>
<li>load – When to load viewer: click, visible, immediate (default: click)</li>
<li>toolbar – Show toolbar: true/false (default: true)</li>
</ul>
<h3>Privacy</h3>
<p>This plugin:</p>
<ul>
<li>Does not collect any personal data</li>
<li>Does not send data to external services</li>
<li>Stores preview images locally on your server</li>
<li>Uses PDF.js library loaded from your own server</li>
</ul>


MaxtDesign PDF Viewer

The fastest PDF viewer for WordPress. Sub-200ms load times, zero layout shift, and a beautiful reading experience.

christian.loelkes

<p>With a simple shortcode you can enable and embed a WebGL viewer to show 3d stl files.</p>
<p>In the current version:</p>
<ul>
<li>STL files have to be uploaded to /wp-content/uploads</li>
<li>The viewer can’t be used more than one time per page. This might be a feature because the viewer needs a lot of resources.</li>
</ul>
<p>A complete description of the plugin can be found on <a href="https://www.db4cl.com/projects/stlviewer-1-0-for-wordpress/" rel="nofollow ugc">my blog</a>.</p>


STL Viewer

With a simple shortcode you can enable and embed a WebGL viewer to show 3d stl files.

MaxtDesign PDF Viewer vs STL Viewer