If you mean from a map view then you can't unless a server has a website for that. If you mean ingame then Optifine mod.
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F4
You cannot zoom in on vanilla Minecraft. You need to install the Optifine Mod for this feature.
Press F5
Get the client optifine. Then once it is loaded up, press left ctrl to zoom !
no because that's a map and you need Minecraft to install it in your Mincraft