Regarding academic transcripts

I am an international student.
I had a query reg academic transcripts. What am I supposed to send when academic transcripts are demanded? Should I scan and send the scanned copies of my report cards? Or am I supposed to send the originals? Or something else?
Plus how do I send them? By post or through some online portal?

You do nothing. Your school sends them. Instructions are found on the application website.

Application website? Can you please clarify?

If applying via the Common/Coalition App, instructions are there. If applying to a college that does not take the Common App or Coalition App, like MIT or UCLA, then the college admission’s site will have instructions.

thank you!

Glad someone helped!