Modding allows players to create their own elements with custom behaviors in Sandboxels and share them with other players. This tutorial will walk you through the basics of modding the game by creating a simple element, with no JavaScript knowledge required (though concepts of it are discussed)
on laptops you can sometimes zoom in with the touchpad and just setting the website zoom in your browser works with me too, maybe try the windows zoom feature, but I think all this stuff isn't exactly what you want