When you switch themes or change image sizes, your existing images keep their old sizes and new sizes are missing. Kestrelpine Image Size Manager rebuilds the sizes you pick for the images you pick, with a progress screen you can pause and resume, and it shows the old size files that nothing uses any more.
Features
wp kestrelpine-sizes regenerate with --sizes, --missing-only, --from, --to and --dry-run.Privacy
Kestrelpine Image Size Manager does not send any data anywhere and does not set cookies. It stores the progress of a running job in your user profile and removes it when you uninstall the plugin.