Dear Mitko Jovanov,
Please try to upload images with the size are same, the images in product page will rezise a same dimension. If you want resize the image, please go to your_site\templates\sj_bakery\html\com_virtuemart\productdetails\default_images.php and find:
$imagesrcmain = YTTemplateUtils::resize($this->product->images[0]->file_url, '305', '210', 'stretch');
=>
$imagesrcmain = YTTemplateUtils::resize($this->product->images[0]->file_url, '300', '350', 'stretch');
and:
$imagesradditional = YTTemplateUtils::resize($image->file_url, '305', '210', 'stretch');
=>
$imagesradditional = YTTemplateUtils::resize($image->file_url, '300', '350', 'stretch');
Thanks
