The Field API in Drupal core lacks the ability for other modules to easily alter field formatter settings forms and the formatter summaries. This module is a small API provider for other modules since it's too late to get the hooks into Drupal 7 core.
Drupal 8
This module's API have been added to Drupal 8 via hook_field_formatter_third_party_settings() and hook_field_formatter_settings_summary_alter(). See [#945524] for the Drupal 8 core issue.
Modules that require the Field formatter settings module:
Short name
field_formatter_settings
Supporting organizations
Initial development