The item frame is a block that is used to display any item that is placed inside it for decorative or sorting purposes. They can be placed on walls in a similar manner to paintings. Players can place items in the frame and then rotate them by right-clicking them.
An item frame (via screenshot)
You can find a naturally generated item frame in an end ship, the item frame here contains a pair of elytra. You can pick up the item frame by simply punching it. Expert-level cartographer villagers have a chance to sell you an item frame for 7 emeralds. You can also craft item frames with 8 sticks and a single leather.
Crafting an item frame (via screenshot)
Players can place any item in the item frame by simply right-clicking them. You can place item frames on the sides of all solid blocks, they can also be placed on the top and bottom of solid blocks. Item frames are commonly placed on chests to help players sort their loot.
An item frame with coal block in it (via screenshot)
Item frames are helpful items that can be used to display certain items, hold maps, or just help in marking chests. Since making them is quite easy, it is recommended to use them for sorting your inventory and storage.
A. Item Frames can also generate a Redstone Signal using a Redstone Comparator by rotating the Item or Block inside them.
A. An item frame will not break if water flows over it.
A. Item frames have a variant that allows them to glow in the dark.