How to prevent pop up PDF file automatically after downloading it? I use lenovo phone where I faced this problem but I got no solution to fix the problem.

After download of any PDF file it pops up automatically and automatically it opens . This problem is really irritating when I download more than 10 PDF file together . After downloading one file it pops up then I need to close it then return to my download page and download another file it really takes lot of time. Any solution ?
Long press on the download link, and press on open in new tab this will download the file in the background instead of opening it right away. You will then be able to access the file by going to downloads in chrome or using a file manager.

(Tested on Moto x4 using chrome. Can't vouch for other devices)