ItemZoom is a mod designed for those who primarily enjoy building in Minecraft. This is a very simple mod, but no less interesting for that. Its function is to show a large size reproduction of any block in our inventory, whenever we have the cursor over that block in question.
With this mod installed, if we access our inventory and place the mouse pointer, for example, on a block of quartz, it will display this block of quartz on the left of the screen in a larger size, so that we can see if the design of this block is the one we need or want for our build.
The mod will also perform this function with all those decorative blocks that are added by other mods, and in fact this is its main function, since each player knows the design or appearance of the predefined blocks in the game. We can activate or disable this feature by pressing “Shift + the Z key”.