François Yerg

Ara Lightbox a is easy to use and customizable plugin that lets you display your website’s pictures in a lightbox popup. 
You can customize the popup background color and opacity, the picture border and the catpion.
<h4>Usage</h4>
<ol>
<li>Insert links to image file into your posts/pages.</li>
<li>Set alt attribute of your image, it will be used as caption in the lightbox.</li>
</ol>
That’s it! The image will be displayed in a lightbox automatically.

Ara Lightbox

Ara Lightbox lets you display your website's pictures in a customizable popup.

Scott Reilly

This plugin preserves formatting of code for display by preventing its modification by WordPress and other plugins while also retaining whitespace.
NOTE: This plugin does NOT handle posts containing blocks. For such posts, use the built-in code or preformatted blocks to format your code for display. However, this plugin would still be needed if you have text-based posts from before using the blocks-based editor.
NOTE: Use of the visual text editor will pose problems as it can mangle your intent in terms of <code>code</code> tags. I strongly suggest you not use the visual editor in conjunction with this plugin as I have taken no effort to make the two compatible.
Notes:
Basically, you can just paste code into <code>code</code>, <code>pre</code>, and/or other tags you additionally specify and this plugin will:
<ul>
<li>Prevent WordPress from HTML-encoding text (i.e. single- and double-quotes will not become curly; “–” and “—” will not become en dash and em dash, respectively; “…” will not become a horizontal ellipsis, etc)</li>
<li>Prevent most other plugins from modifying preserved code</li>
<li>Prevent shortcodes from being processed</li>
<li>Optionally preserve whitespace (in a variety of methods)</li>
<li>Optionally preserve code added in comments</li>
</ul>
Keep these things in mind:
<ul>
<li>ALL embedded HTML tags and HTML entities will be rendered as text to browsers, appearing exactly as you wrote them (including any <code>br</code> tags).</li>
<li>By default this plugin filters ‘the_content’ (post content), ‘the_excerpt’ (post excerpt), and ‘get_comment_text (comment content)’.</li>
</ul>
Example:
A post containing this within <code>code</code> tags:
<pre><code>$wpdb->query("
 INSERT INTO $tablepostmeta
 (post_id,meta_key,meta_value)
 VALUES ('$post_id','link','$extended')
");
</code></pre>
Would, with this plugin enabled, look in a browser pretty much how it does above, instead of like:
<pre><code>$wpdb->query(&#8212;
INSERT INTO $tablepostmeta
(post_id,meta_key,meta_value)
VALUES ('$post_id','link','$extended')
&#8213;);
</code></pre>
Links: <a href="https://coffee2code.com/wp-plugins/preserve-code-formatting/" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://wordpress.org/plugins/preserve-code-formatting/" rel="ugc">Plugin Directory Page</a> | <a href="https://github.com/coffee2code/preserve-code-formatting/" rel="nofollow ugc">GitHub</a> | <a href="https://coffee2code.com" rel="nofollow ugc">Author Homepage</a>

Preserve Code Formatting

Preserve formatting of code for display by preventing its modification by WordPress and other plugins while also retaining whitespace.

Ara Lightbox vs Preserve Code Formatting