In general, you don’t. The theme should be setting the appropriate featured image size, as default the plugin will use the themes templates to display the event data.
If you need to, you could use the templates found in /wp-content/plugins/event-espresso-core-reg/public/Espresso_Arabica_2014 and add the appropriate ones to a child theme and manually set the thumbnail size with code.
The support post ‘EE4 Registration page featured images’ is closed to new replies.
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