Milan Dinić

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Image descriptions are stored as content (field <code>post_content</code>) while captions are stored as excerpt (field <code>post_excerpt</code>). This means that descriptions are shown on single attachment pages, while captions are shown in <a href="https://codex.wordpress.org/Gallery_Shortcode" rel="nofollow ugc">galleries</a> and if image is embedded in a post content with a <code>[caption]</code> shortcode.
If you use images just in galleries, in order to have text below image in both places, you need to fill both fields.
This plugin changes that. You only fill description field and that text is used as caption of image in galleries.
There are no options or settings, just enable plugin and everything works automatically.

Descriptions as Captions in Galleries

Show image descriptions as captions in galleries.

ivans3m

FoA Featured Image – Show Caption is a simple WordPress plugin that extends the core Featured Image block with caption functionality. When enabled, it displays the image caption (or title if no caption exists) below the featured image.
Key Features:
<ul>
<li>Adds a “Show Caption” checkbox setting to the Featured Image block</li>
<li>Displays the image caption (or title if no caption) below the featured image</li>
<li>Works with the Gutenberg block editor and templates</li>
<li>Clean, minimal styling that works with most themes</li>
<li>Right-aligned caption with light grey color</li>
</ul>
How it Works:
<ul>
<li>The plugin extends the core Featured Image block with additional settings</li>
<li>When “Show Caption” is enabled, it checks for a caption on the featured image</li>
<li>If no caption exists, it falls back to using the image title</li>
<li>The caption is displayed in a <code><div class="featured-image-caption"></code> element</li>
<li>Works with both regular posts/pages and WordPress templates</li>
</ul>
Styling:
The plugin includes default CSS styling for the caption: 
* Text aligned to the right 
* Light grey color (#999) 
* Italic font style 
* Small font size
You can easily customize the appearance by targeting the <code>.featured-image-caption</code> class in your theme’s CSS. The plugin uses standard CSS specificity, so your theme styles will override the defaults.

FoA Featured Image – Show Caption

Adds caption functionality to Featured Image blocks with a simple checkbox setting.

Descriptions as Captions in Galleries vs FoA Featured Image – Show Caption