One Crayon

Markup to Featured Image will automatically generate a featured image when you publish a post, with the intent of allowing you to publish posts with featured images from third-party clients like MarsEdit.
To add a featured image to your post, include one of the following markup variants in your post’s content:
<pre><code><img src="/path/to/image.jpg" data-featured-image="keep" />
<img src="/path/to/image.jpg" data-featured-image="strip" />

</code></pre>
If you use an <code><img></code> element, the values of the <code>data-featured-image</code> attribute specify whether the image should be displayed when the post is shown on your site (<code>keep</code>) or ignored when the post is displayed (<code>strip</code>). The order of attributes in your <code><img></code> tag (and whether you include other attributes, like width/height, title, alt, etc.) doesn’t matter. You can make it as complicated or simple as you like.
If the post already has a featured image, the plugin will do nothing (version 1.0 does not allow updating the thumbnail by updating the markup).

Markup to Featured Image

Automatically set the featured image (formerly the post thumbnail) for a post based on custom markup in the body text.

DADOK - Global Internet Solutions

Fastest way to choose Featured Image to your Posts from Yahoo.com, Seznam.cz, etc..
<h4>Showcase</h4>
Even for the blind. The plugin also allows a blind user to enter a keyword to find a number of thumbnail suggestions and send this selection to the seeing assistant by e-mail. The assistant simply clicks on the best photo directly in the email and the photo is safely added to the article as Featured Image.
<iframe loading="lazy" class="youtube-player" width="750" height="422" src="https://www.youtube.com/embed/CPXuRy5Eb_c?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>
Link to YouTube: https://www.youtube.com/watch?v=CPXuRy5Eb_c
WARNING: All images & photos from commercial sources have reserved rights, so don’t use them without a valid license! Author of this plugin are not liable for any damages arising from its use.

Featured Image from External Sources

Lets keep some messages and replies about plugin and upgrades guys, you are welcome!

Any tips for upgrades? :-)

Fastest way to choose Featured Image to your Posts from Yahoo Images, Seznam.cz, etc..

Markup to Featured Image vs Featured Image from External Sources