I want to be able to check the content of binary file before downloading it on a browser when I reach a .exe file with a URL (something like www.example.com/test.exe)

I did not find anything to do it, i f i can do it with a web extension it would be great also ! But when I tried just to reach the binary files, I have seen that I can not execute any script in my extension before begin the downloading. So I am a little bit lost ahah

Thank you for your time !!