Arefly

Busy with setting every post’s first image to the Featured Image?
Use this plugin instead!
This plugin will auto set the first image of your post (for new posts only) to Featured Image.
If you do not want set the first image, you can still set your own Featured Image.
<h4>How Does It Work?</h4>
You do not need to set anything after you install and no any options.
The plugin will auto set the first image of your new posts to Featured Image.
<h4>How to exclude a specific post?</h4>
<ol>
<li>
Go in to the post/page you do not want to autoset Featured Image.
</li>
<li>
Find Meta Box name “Custom Field”.
</li>
<li>
Click “Enter new”.
</li>
<li>
Enter “no_featured_image” in Name Table and enter anything in Value Table.
</li>
</ol>

Autoset Featured Image

I can see how this would be useful, though, but for my purposes and by the name of it, I was hoping it'd go through old posts and, if they didn't have a featured image, set the first image.



Wish it worked for existing posts...

Auto Set the first image of your post to Featured Image.

sewpafly

To meet the needs of themes where the post-thumbnails have random and capricious sizes (which causes wordpress to crop images simply from the middle (either chopping off the top and bottom or chopping off the sides), this plugin attempts to give the users an interface to manually fix those thumbnail and random images.

Post Thumbnail Editor

Does not work

Fed up with the lack of automated tools to properly crop and scale post thumbnails? Maybe this plugin can help.

Autoset Featured Image vs Post Thumbnail Editor