Boxing increases the size of product photos by 10,,,20 times

https://lums.crm-onebox.com/app/product/717/edit/ here is an example of a product the first photo 200kb JPG is uploaded to the product card https://prnt.sc/ije8fBXuyrcJ then in the box it became 3.8Mb PNG https://prnt.sc/ggzbB3iy2fWm then it gets to the opencard site https://lums.com.ua/Otrazhatel-svetilnika-EDI-FARO-reflektor-odna-polovinka-LU-02052 and on prom https://prnt.sc/vNuheENpirrb Openkart hosting swears that there is not enough space on the disk, because the photo is 4.3.2 MB in size, although after editing the photo I save it with a size of 100,,,300kb in the product settings, there is a Jpg format. set to add watermark to photo maximum photo size 2000 pixels https://prnt.sc/yFrVCEknof1H It seems to me that the box increases the size of the photo to 1600 pixels and makes it in a different format. Where to set it up? how to make the box not enlarge the photo? how to make the box not change the name of the photo? (I specify the name according to the article of the product)