mirgcire

stianlik

This plugin hooks into the media manager and generates a thumbnail everytime a 
PDF is uploaded. Generated thumbnail is an image of the first page in the 
uploaded document and is named <code>PDFNAME-thumbnail</code>, where <code>PDFNAME</code> is replaced 
by uploaded document filename.
Generated thumbnails are equivalent to <a href="https://codex.wordpress.org/Post_Thumbnails" rel="nofollow ugc">featured 
images</a> so that common thumbnail 
functions like <code>get_post_thumbnail_id()</code> can be used for PDF attachments. See 
<a href="https://codex.wordpress.org/Post_Thumbnails" rel="nofollow ugc">Post Thumbnails</a> for information 
on how you can use thumbnails efficiently.
Integration with the javascript media API is not yet implemented, therefore, you 
may need to reload the page before you can see generated thumbnail after an 
upload.
<h4>Shortcodes</h4>
It is possible to display a thumbnail linking to an uploaded PDF using the <code>[pdf_thumbnails_link]</code> 
shortcode. The following attributes are supported:
<ul>
<li><code>id</code> – Attachment ID (required)</li>
<li><code>size</code> – <a href="https://codex.wordpress.org/Post_Thumbnails#Thumbnail_Sizes" rel="nofollow ugc">Thumbnail size</a> (optional)</li>
<li><code>title</code> – <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes#attr-title" rel="nofollow ugc">Anchor title attribute</a> (optional)</li>
<li><code>target</code> – <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a#attr-target" rel="nofollow ugc">Anchor target attribute</a> (optional)</li>
<li><code>download</code> – <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a#attr-download" rel="nofollow ugc">Anchor download attribute</a> (optional)</li>
</ul>
Example 1: Display link to PDF with ID = 172 using <a href="https://codex.wordpress.org/Post_Thumbnails#Thumbnail_Sizes" rel="nofollow ugc">default thumbnail size</a>
<pre><code>[pdf_thumbnails_link id="172"]
</code></pre>
Example 2: Display link to PDF with ID = 172 using thumbnail size (default 150×150)
<pre><code>[pdf_thumbnails_link id="172" size="thumbnail"]
</code></pre>
Thanks to <a href="https://wordpress.org/support/profile/mirgcire" rel="ugc">mirgcire</a> for providing the first 
version of the <code>[pdf_thumbnails_link]</code> shortcode.
<h4>Developer API</h4>
In most cases it should be sufficient to use built-in thumbnail functions from 
the WordPress API (<code>get_post_thumbnail</code> and similar). If you need to modify the 
way thumbnails are generated, you can override image generation with 
the <code>pdf_thumbnails_generate_image_blob</code> filter.
Example 1: Increase resolution for all generated PDF thumbnails
<pre><code>// $blob is the current image blob (defaults to null, can be used for chaining)
// $filename is the PDF filename
add_action('pdf_thumbnails_generate_image_blob', function ($blob, $filename) {
 $imagick = new Imagick();
 $imagick->setResolution(200,200);
 $imagick->readImage($filename);
 $imagick->setIteratorIndex(0);
 $imagick->setImageFormat('jpg');
 return $imagick->getImageBlob();
}, 10, 2);
</code></pre>
It is possible to modify generated thumbnail links using the <code>pdf_thumbnails_link_shortcode</code> 
filter. The following attributes are available:
<ul>
<li><code>$html</code> – Generated HTML code to be displayed</li>
<li><code>$attachmentId</code> – Sanitized ID of the PDF attachment</li>
<li><code>$size</code> – Sanitized thumbnail size</li>
<li><code>$atts</code> – <a href="https://codex.wordpress.org/Shortcode_API#Handling_Attributes" rel="nofollow ugc">Shortcode attributes (not sanitized)</a></li>
<li><code>$content</code> – Shortcode content (not sanitized)</li>
</ul>
Example 2: Wrap thumbnail link in figure and append caption
<pre><code>add_filter('pdf_thumbnails_link_shortcode', function ($html, $attachmentId, $size, $atts, $content) {
 return "<figure>$html <caption>Click to open image $attachmentId</caption></figure>";
}, 10, 5);
</code></pre>
<h3>TODO</h3>
Add generated image to media browser after upload.
Outline of an implementation based on the javascript media API:
<pre><code>// New uploads
wp.Uploader.queue.on('add', function (attachment) {

 if (attachment.subtype !== 'pdf') {
 return;
 }

 findThumbnailFor(attachment.ID).then(function (data) {

 // Add attachment thumbnail to browser
 var attachment = wp.media.model.Attachment.get(id)
 attachment.fetch().done(function () {
 wp.media.editor.open().state().get('library').add(generated attachment)
 });

 });
});
</code></pre>
Filter: ajax_query_attachments_args

PDF Thumbnails

The plugin does just what it says and the author is very helpful.  My only suggestion would be to add a short code that would insert a clickable thumbnail into a webpage.  Clicking on that would open the PDF in a viewer.
For example: [pdf-thumbnail id="1234" size="medium"]
... naturally this functionality would require host support for imagick.



Nice Job

Works just like it should. Can't believe this functionality isn't in the WP core. Thanks!

Excellent

This plugin generates a thumbnail everytime you upload a PDF attachment. Generated thumbnail is an image of the first page in uploaded document.

Andrei Surdu

SMK Sidebar Generator is a powerful yet easy-to-use WordPress plugin that lets you create unlimited custom sidebars and conditionally display them anywhere on your website – without writing a single line of code.
Whether you need different sidebars for your blog, shop, landing pages, or specific posts, this plugin gives you complete control over your widget areas.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/VvKjYLDu_W0?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>
<h4>Why Choose SMK Sidebar Generator?</h4>
<ul>
<li>100% Free – All features included, no premium version upsells</li>
<li>No Coding Required – Create and manage sidebars entirely from the WordPress admin</li>
<li>Lightweight – Clean code that won’t slow down your site</li>
<li>Works With Any Theme – Sidebars automatically inherit your theme’s styling</li>
<li>Actively Maintained – Regular updates and WordPress compatibility</li>
</ul>
<h4>Key Features</h4>
Unlimited Sidebars 
Create as many sidebars as you need. Perfect for blogs, business sites, WooCommerce stores, or any WordPress website.
Replace Theme Sidebars 
Seamlessly replace your theme’s default sidebars with custom ones. No theme file editing required.
Conditional Display 
Show different sidebars based on:
<ul>
<li>Specific pages</li>
<li>Specific posts</li>
<li>Custom post types</li>
<li>Post type archives</li>
<li>Taxonomy archives</li>
</ul>
Drag and Drop Management 
Reorder your sidebars with an intuitive drag-and-drop interface. Easily organize and prioritize your widget areas.
Responsive Admin Interface 
Modern, clean admin UI that works great on any device – desktop, tablet, or mobile.
Shortcode Support 
Display any sidebar anywhere using a simple shortcode: <code>[smk_sidebar id="your-sidebar-id"]</code>
Developer Friendly 
Use PHP functions in your theme templates:
<pre><code><?php
// Display sidebar by ID
if ( function_exists( 'smk_sidebar' ) ) {
 smk_sidebar( 'your-sidebar-id' );
}

// Or use WordPress native function
dynamic_sidebar( 'your-sidebar-id' );

// Get all registered sidebars
$sidebars = smk_get_all_sidebars();
?>
</code></pre>
<h4>Perfect For</h4>
<ul>
<li>Bloggers – Different sidebars for categories, tags, or specific posts</li>
<li>Business Sites – Unique widget areas for services, about, contact pages</li>
<li>WooCommerce Stores – Shop-specific sidebars separate from blog sidebars</li>
<li>Membership Sites – Conditional sidebars for different content areas</li>
<li>Developers – Template functions and shortcodes for theme integration</li>
</ul>
<h4>Support and Documentation</h4>
<ul>
<li><a href="https://github.com/awps/smk-sidebar-generator" rel="nofollow ugc">GitHub Repository</a> – Report bugs and contribute</li>
<li><a href="https://wordpress.org/support/plugin/smk-sidebar-generator/" rel="ugc">Support Forum</a> – Get help from the community</li>
</ul>

SMK Sidebar Generator

Thank you for such a great plugin! The best I've used! Keep it up!

Superb!

Create unlimited custom sidebars and widget areas. Display different sidebars on specific pages, posts, or custom post types with conditional logic.

PDF Thumbnails vs SMK Sidebar Generator