Blockiesvue - Demo Page
BlockiesVue is a component, which is used to generate unique images from strings.
This is usually used with web3 addresses example: 0x0921598333Cf3cE5FE2031C056C79aec59EE10b6 .
That address is mine by the way if you wanna pay a coffee rofl.
In this following image you can see they using a blockies in the etherscan site:
If you want to know more you can check the component code here .