Vincent Dubroeucq

Visit your blog posts listing page, or a single post page, and open up the WordPress customizer.
Under Tiny Thumbnail Settings, choose or upload your default image. That’s it !
Enjoy !

Tiny Default Thumbnail

Allows you to add a default featured image to posts. Just add a default image in your customizer settings !

heinvv

This plugin adds a thumbnail to the My Templates library in Elementor both inside the Elementor editor and on the WordPress dashboard.

My Templates Thumbnails for Elementor

This plugin adds a thumbnail to the My Templates library in Elementor.

Tiny Default Thumbnail vs My Templates Thumbnails for Elementor