Are Stickers in a chat application just files stored on a server?

I’m pretty sure you need to download them to your device

they're practically just images mapped to emojis

@Krokoklemme But emojis are Unicode characters. I don't think stickers are like characters. Probably they are just images with names into the app and when you send it the receiver will download it if doesn't have a local copy. If the receiver has the image stored then just display the local one and reject the download.

@LuxARTS yeah, no shit? but that's an implementation detail

i want trying to give a complete explanation, just a (very) rough overview

its kind of emoj_sticker_map like this :

in client side :
{emoji_code => @,
has_stickers => true,
does_user_want_to_use_sticker_insteadOf_emoji=> true,
is_stickerspack_downloaded=> yes,
sticker_pack_name=> "",
emoji_sticker_name => "",
emoji_address => ""

in Server Side :
{
sticker_packs_name => "",
stickers_collection_name_in_pack => [] ;
.....
}