Media. Settings -> Media changing thumbnail sizes in WordPress I began playing with the Thumbnail size - Width and Height. Trying different sizes seeing which looked good on the site. I noticed that some images I have made as squares but most are rectangular. Changing image sizes WordPress has a cache of the "old" size and sends the new size to the web browser. The browser then uses the new size even though the WordPress cache has the old size because we have not told it to go through all the images and update the cache to the new size. The images will then come out as distorted. So we need to regenerate the cache to reflect the correct size. Since WordPress does not have a built in refreshing of" />Media. Settings -> Media changing thumbnail sizes in WordPress I began playing with the Thumbnail size - Width and Height. Trying different sizes seeing which looked good on the site. I noticed that some images I have made as squares but most are rectangular. Changing image sizes WordPress has a cache of the "old" size and sends the new size to the web browser. The browser then uses the new size even though the WordPress cache has the old size because we have not told it to go through all the images and update the cache to the new size. The images will then come out as distorted. So we need to regenerate the cache to reflect the correct size. Since WordPress does not have a built in refreshing of" />