PenciDesign Supporter replied
Hi,
In general, you should install & use the Media Cleaner plugin here: https://wordpress.org/plugins/media-cleaner/ This plugin will scan and remove all unused image files on your site.
If you disable the image size on the customizer settings, WordPress will display the full-size URL for some areas & layout (that will affect the pagespeed).
Regards,
PenciDesign.