RustyBadRobot

Rusty Social Image Share resizes your post thumbnail to perfectly fit to the Facebook Share dimensions whilst keeping your original image dimensions.
See the <a href="https://wordpress.org/extend/plugins/rusty-image-share/screenshots/" rel="ugc">screenshots tab</a> for more details.

Rusty Social Image Share

Keep your original Featured Image proportions whilst sharing to Facebook.

fahrirusliyadi

WordPress generates thumbnails in the same directory with the original image. This plugin change this behavior by generating the thumbnails in a separate directory. The thumbnails will only be generated when they are needed and has not been generated.
This plugin will only move the thumbnails location for new uploaded images. To move all thumbnails, you need to delete all existing thumbnails (see FAQ).

Fr Thumbnails Folder

Move thumbnails file location to {$upload_path}/thumbnails or {$upload_path}/sites/{$blog_id}/thumbnails for multisite.

Rusty Social Image Share vs Fr Thumbnails Folder