mitcho (Michael Yoshitaka Erlewine)

This plugin adds a big red “preview” watermark to post previews. Never again be confused whether you’re looking at a preview or a published post!
Note: This plugin may not work well if your theme involves a background image on your <code>body</code>.
This plugin is a component of the <a href="http://ecs.mit.edu" rel="nofollow ugc">MIT Educational Collaboration Space</a> project.

Distinct Preview

This plugin adds a big red "preview" watermark to post previews. Never again be confused whether you're looking at a preview or a publi …

Freemius

ShawonPro

SocialMark is a WordPress plugin that allows adding overlay/watermark to social media post link share preview. It gives the option to use different images for social media (Twitter, Facebook) and add overlay/watermark to the preview. The plugin enables 2 different watermark positions(9 in premium version) to set overlay at different places on the post image. There are two settings options: universal settings for all posts and pages, post-wise settings for individual page/post. SocialMark also works with Yoast SEO and RankMath plugin’s open graph settings. Add sponsored image on your social media news/post preview easily.
<h3>SocialMark Plugin Features:</h3>
<ul>
<li>
Automatic Process: The plugin will generate different SocialMark image based on your settings.</li>
<li>Auto Resize: Automatically resize image based on aspect ratio</li>
<li>Different Position: You can set your watermark/overlay from 2 different positions on your featured image</li>
<li>Transparent Image: Overlay image can be transparent</li>
<li>Extensive Settings: 1 Setting all posts/pages.</li>
<li>Unlimited Overlay/Watermark: Upload unlimited overlay/watermark image and choose the one you need from the list</li>
<li>Enable/Disable: It is posible to enable or disable SocialMark all posts and pages</li>
<li>Transparent Overlay Support: Overlay image can be tranparent</li>
<li>Yoast SEO Supported: This plugin can generate image for Yoast SEO plugin open graph meta also</li>
<li>RankMath Supported: Automatically generate Twitter and Facebook image for RankMath plugin
</li>
<li>Change og:image for: JetPack, All in one SEO, SEO press, OG, Open Graph and Twitter Card Tags, graphite, and all other plugins.
</li>
</ul>
<h3>[+] SocialMark Premium Version Extra Features – Only $14.90/year:</h3>
<a href="https://shawonpro.com/socialmark-wp-plugin/" rel="nofollow ugc">Buy Premium Version</a>
<ul>
<li>All Free Features plus</li>
<li>Different Position: Add overlay/watermark to your social media post preview image at 9 different positions.</li>
<li>Post-wise Settings: You can set different overlay for every post/page individually.</li>
<li>Category-wise Settings: You can set different overlay for specifice category’s posts.</li>
<li>WooCommerce: You can set overlay and different featured image for WooCommerce product for social media.</li>
<li>Custom Post Type Support: Enable/Disable SocialMark for custom post types such as property, car, directory etc. </li>
<li>Disable for old posts: Disable SocialMark for old posts by entering a date.</li>
<li>Different Feature Image: You can upload different feature image only for social media</li>
<li>Enable/Disable: It is posible to enable or disable SocialMark for any post or page individually as well as enable/disable all posts/pages</li>
<li>Full Width Image Auto Generation: Full width image generation with background color for square size and portrait images</li>
<li>Regular Feature Update: We usually add customer requested complex features exclusively on premium version</li>
</ul>
<h3>SocialMark Installation:</h3>
<iframe loading="lazy" class="youtube-player" width="560" height="315" src="https://www.youtube.com/embed/gouRK9R6psU?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>
<h3>SocialMark Demo:</h3>
<a href="https://shawonpro.com/socialmark-wp-plugin/" rel="nofollow ugc">Check live demo</a>
<h3>Installation:</h3>
<ul>
<li>From the WP admin panel, click “Plugins” -> “Add new”</li>
<li>In the browser Click on “Upload Plugin”</li>
<li>Choose the “socialmark” plugin zip file and click “Install Now”</li>
<li>Activate the plugin</li>
<li>Go to SocialMark Plugin Settings or Click “SocialMark” from admin menu</li>
<li>Add Overlay</li>
<li>Select plugin options</li>
<li>Save Changes</li>
<li>You are ready to go</li>
<li>Alternatively, you can manually upload the plugin to your wp-content/plugins directory</li>
<li>Don’t forget to add feature image to your post </li>
<li>Easy way to test social media open graph preview https://www.opengraph.xyz/</li>
</ul>

SocialMark – Easy Watermark/Logo on Social Media Post Link Share Preview

Add your logo/watermark/overlay to your wordpress social media post share link preview(open graph image). It will not change your website image view.

Distinct Preview vs SocialMark – Easy Watermark/Logo on Social Media Post Link Share Preview