I bought a picture and the download is in a format I can't open. #77602421. What do i do to get the picture in jpeg.
You will need to use Illustrator to convert it to JPG. Or have someone with Illustrator or compatible app to convert it for you. You can try bringing it into Photoshop to edit it but you will not be able to increase the size without loss of quality.
Another option would be to open the image in Adobe Draw on your phone or tablet.