In template files code, images are dynamically generated this way, example with function _simg:
<img src="<?php echo _simg($file['url'], '470x311');?>"
numbers
470x311
represents resolution, so you can change it to wanted.
Some example for slider in classified script on listing preview:
General details how images are upload and saved:
it is saved in files/ by application\libraries\UploadHandler.php
‘max_width’ => 1280
and files\thumbnail by application\libraries\UploadHandler.php
‘max_width’ => 300,
then based on theme needs, is resized from strict_image.php to multiple versions where needed and cache saved in “files\strict_cache”
