Check the url.
/media/filer_public_thumbnails/filer_public/d7/e6/d7e66214-0ef1-4b2c-be15-68479c62c976/9783704692320_852505d43dca91770f6bd0a112106455_700x700.jpg__576x873_q85_crop_subsampling-2_upscale.jpg