To add an image to a content type on Drupal 8, follow these steps:
1. Go to Structure > Content types in the admin toolbar.
2. Choose the content type you want to add an image to.
3. Click on the Manage fields tab.
4. Click on the Add field button.
5. Select Image from the list of field types.
6. Enter a label for the field, such as “Image”.
7. Choose the widget you want to use for the field. The default widget is “Image”, which allows users to select an image file from their computer. Other options include “Image Upload” and “Image URL”.
8. Configure any additional settings for the field, such as allowed file types and image sizes.
9. Click on the Save button to save the field.
