Step 1: Upload assets
Every NFT collection contains some assets, and these assets are the digital items mostly represented by the images. The first step in the process is to actually prepare the images in a folder on your computer. There are some guidelines when doing this, and the two simple rules to follow here are:
all the images should be of the same size (same width and height)
all images should be placed in one folder and named in order: 0.jpg, 1.jpg, ...
Note that the folder name containing the images is not important. The image type is also not important, they can be JPEGs, PNGs or whatever.
For example, we're going to launch our own collection containing three very rare monkey images found on the web and this is what our folder looks like:
You should do the same, and prepare the folder with your images named properly.
Now you have to upload this folder to the IPFS or some other storage service.
If you're not familiar with the IPFS and would like to understand why the IPFS is highly recommended to be used as a storage method for the NFT collection, refer to this guide for a start.
The easiest way to upload to IPFS, is to register a free account on a Pinata. When you're done, log in and upload the images folder like we did (shown below):
The end result of this step is the CID (content identifier) hash which you have received once the folder was uploaded. The CID is highlighted in the end of the video, and in our case it looks like this:
In the next step, we'll use this identifier to build the metadata files.
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