edlp_d8/core/modules/image/image.routing.yml

image.style_add:
  path: '/admin/config/media/image-styles/add'
  defaults:
    _entity_form: image_style.add
    _title: 'Add image style'
  requirements:
    _permission: 'administer image styles'

entity.image_style.edit_form:
  path: '/admin/config/media/image-styles/manage/{image_style}'
  defaults:
    _entity_form: image_style.edit
    _title: 'Edit style'
  requirements:
    _permission: 'administer image styles'

entity.image_style.delete_form:
  path: '/admin/config/media/image-styles/manage/{image_style}/delete'
  defaults:
    _entity_form: 'image_style.delete'
    _title: 'Delete'
  requirements:
    _permission: 'administer image styles'

entity.image_style.flush_form:
  path: '/admin/config/media/image-styles/manage/{image_style}/flush'
  defaults:
    _entity_form: 'image_style.flush'
    _title: 'Flush'
  requirements:
    _permission: 'administer image styles'

image.effect_delete:
  path: '/admin/config/media/image-styles/manage/{image_style}/effects/{image_effect}/delete'
  defaults:
    _form: '\Drupal\image\Form\ImageEffectDeleteForm'
    _title: 'Delete image effect'
  requirements:
    _permission: 'administer image styles'

entity.image_style.collection:
  path: '/admin/config/media/image-styles'
  defaults:
    _entity_list: 'image_style'
    _title: 'Image styles'
  requirements:
    _permission: 'administer image styles'

image.style_private:
  path: '/system/files/styles/{image_style}/{scheme}'
  defaults:
    _controller:  '\Drupal\image\Controller\ImageStyleDownloadController::deliver'
  requirements:
    _access: 'TRUE'

image.effect_add_form:
  path: '/admin/config/media/image-styles/manage/{image_style}/add/{image_effect}'
  defaults:
    _form: '\Drupal\image\Form\ImageEffectAddForm'
    _title: 'Add image effect'
  requirements:
    _permission: 'administer image styles'

image.effect_edit_form:
  path: '/admin/config/media/image-styles/manage/{image_style}/effects/{image_effect}'
  defaults:
    _form: '\Drupal\image\Form\ImageEffectEditForm'
    _title: 'Edit image effect'
  requirements:
    _permission: 'administer image styles'

route_callbacks:
  - '\Drupal\image\Routing\ImageStyleRoutes::routes'