Where to change max amount of mb / Pixels ?

[Kamero4K]

Hi, im running the Waifu2x Websoftware.
When i want to upload some Pics it says that they are to large,
is there somewhere some kind of a config were i can change the max pixel or mb rate?
Something like :

• Max mb : "5MB"
• Max pixel "400x400"

( Again, its the Webversion )
Thanks for your help.