The entire website? https://www.reddit.com/r/emulation/comments/3h2fqx/how_much_space_it_would_take_to_store_every/
This states that the entire Nintendo library up to the Wii would take up about 7.5TB, so you'd be looking at around that + PSP, PS3, PS2, PS1, Dreamcast, Saturn and Genesis. Seeing as how there is no SD card that holds that many terabytes, you aren't going to get this whole website on an SD Card anytime soon considering the highest capacity card right now is 1TB.
"NintenDON'T sue me please haha"
I want to install all of the roms except ps3 on my retroid pocket. I already have the software to do emulate these games. However, I want to know how many gbs would it take to have the entire game library on this site put on an sd card?