Is it upscaled or modified with the size since I found the source is 1459 x 2048?

https://pbs.twimg.com/media/DVuKZDqVAAABQ8W.jpg:orig

kotorilau said:
Is it upscaled or modified with the size since I found the source is 1459 x 2048?

As per above, what you mentioned is the ":large" version, but the ":orig" version should be the original dimensions instead.

Alternatively you can use this format: https://pbs.twimg.com/media/DVuKZDqVAAABQ8W?format=jpg&name=orig

fireattack said:
https://pbs.twimg.com/media/DVuKZDqVAAABQ8W.jpg:orig

Is it the way to find all the pictures with original size from Twitter? For example, just change the saving code with DVuKZDqVAAABQ8W

kotorilau said:
Is it the way to find all the pictures with original size from Twitter? For example, just change the saving code with DVuKZDqVAAABQ8W

Yes, just add the modifier to the end of the image's URL.

If you can't see anything's changed even after the "orig" is added, then it means what you've seen previously is the largest version available (i.e. that's already the original version).

P.S. I think there're at least these:
:thumb
:small
:large
:orig

Dunno if there's a ":medium".

Oh, I see... Thank you so much, fireattack and moonian~ :)