Regenerate Thumbnails Plugin allows you to regenerate your old thumbnails after uploading Dysania Grid Gallery plugin.
Dysania gallery has a responsive grid layout and as you can see on the gallery options, there are 4 different square image size. Because of this reason Dysania plugin must crop your images during upload process.
If you have a lot of images in the WordPress Media Library and if you don’t want to upload them again you can use the following plugin to regenerate all your image thumbnails in a few minutes.
Upload the following plugin to your website;
Using the Regenerate Thumbnails Plugin is so simple. Just activate it and click “Regenerate All Thumbnails” button. Plugin will regenerate all your thumbnails.