Duplicate photo files on the volume of obsidian database

hi everyone, i have some problem when using obsidian.

when i use photo to be more creative, then drag from my pc or on web, it will form a copy on my obsidian, it will become more and more photo from my side, whose photo have already exist on my onedrive before.

it become duplicate volume use, sometimes when i download md file online and insert into obsidian, it will not have the same problem on photo duplicated on my obsidian, it just a link of photo and show off fully.

how do i insert photo, just like youtube embeded on obsidian, no any space used on it?

thank you, every brother.