There might be a situation when you are doing some changes in the image style, and you want to see those changes on already saved content. But, when do changes, you couldn’t view them. As Drupal makes a cache of those images, but even after clearing cache you did not see expected changes in your images.
There are two solutions to this problem:
- Clear image style cache
# make sure you have drush installed drush image:flush # It will list down all your image styles, and ask you to press number which you want to reset Choose a style to flush [all]:  Cancel  all  220x180  350x250  400x310  520x280  large  medium  thumbnail # Type the number and press Enter. # Or, you can directly type style name, like below: drush image:flush large
- Directly delete the folder in sites/default/files folder where this style resides.
rm -fr sites/default/files/styles/large
Now, refresh your content pages and it will work as expected.