We are uploading the first image of an ad with the size 250px by 200px so that it matches the highlighted this size.
And also carry a second image to the gallery, with the size 800px by 600px, but when you click on an ad, all gallery images appear in the size 250px by 200px.
Kindly open your Joomla admin and goto Jomclassifieds General Configuration --> Performance Tuning tab. Here increase the "Detailed view gallery images" width and height and save it. After that goto Adverts tab and select the ads and click Recreate Images button.
Hope this help you.
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