How can I know the resolution of each picture due to I need 300dpi
I think you should show it on each image
The image details show the image size in pixels. Having said that, all photo images are 300dpi minimum.
Then you didn't download it properly or it is an Illustrator file (.ai). What is the image number?
Thanks! Apparently when I clicked on License & Save to computer, it had saved the comp image instead. Figured it out.