Go to https://www.mintgate.io/.
In the right-hand corner, click on the Create button.
Choose the option "Create an NFT"
You will need to log into Twitter in order to use the platform. If you have not logged into Twitter on our platform, you will be prompted to log in. Click on the "Connect Twitter" and log in.
You will now be directed to the Create an NFT page and need to input the following: Choose File Upload an image for your NFT/token Enter the token name Name of the NFT. This will be listed on the NFT card Write a description about your NFT A description about your NFT Allow this many users to claim token This is the number of users who can claim this NFT by browsing through our public feed. A user who claims this off-chain token can then mint it on Rinkeby or Polygon Mumbai testnets.
Once you have completed the form, click on Create an NFT.
Next, you will be asked to set up lockable content behind the NFT. Refer to the How to Set up Token Access page for more information. If you do not have any content that you want the NFT owners to access, you can skip this step.
As a creator of this off-chain NFT, you will automatically receive one of these off-chain NFTs.
You can mint your one off-chain NFT onto Rinkeby or Polygon Mumbai by going to the token page and click on the "Mint" button.