You nee to Download Regenerate Thumbnails WP Plugin. Why I recommended this plugin? Because this plugin is the perfect way to recompile you entire WordPress Thumbnail. Using Regenerate Thumbnail Plugin. You can batch command and re build you thumbnail.
The Developer has said, why this plugin really awesome useful
This is very handy if you’ve changed any of your thumbnail dimensions (via Settings -> Media) after previously uploading images or have changed to a theme with different featured post image dimensions.
This plugin will handle it automatically. Change Thumbnail size not a big deal anymore.
How To Install Regenerate Thumbnails WP Plugin
- Go To Plugin Menu on your WordPress Dashboard Plugins > Add New
- Search for “Regenerate Thumbnails” on the Search Form
- After you got Regenerate Thumbnail, Click install.
- Click activate.
- And you are done. You’ll found new menu and done
That’s it, using this plugin is must have and must installed. If you have a lot of images and need regenerate. This Plugin is yours. Download Regenerate Thumbnails WP Plugin on this Official WordPress Extend
Another site also review Regenerate Thumbnail Plugin
I liked plugin.. But size of kb remains same as original
What’s you mean the size of kb remains same?