This guide covers the bulk upload feature of our Creator Tools. This allows you to use a properly configured zip file containing all of your NFT assets and a CSV of the metadata in order to quickly and easily create all of the NFTs in your collection.
Create a folder on your local machine and add in all of your NFT files. These should be of a supported file type, please see our Creator Tools Guide for more information on supported file types and for help getting to the bulk upload step. Each file name should simply be its token ID number, starting from 0. You can download an example ZIP file right through Creator Tools to assist if needed.
Create a CSV file "tokens.csv" that contains the token metadata and add this to the folder. Your column headers should be Token Id, Name, Description, External URL, Number Of Files, and one for each attribute or trait you would like your NFTs to have. You must name this file simply "tokens.csv". Please note that all of the mandatory column headers (all those besides your traits) are case sensitive. Here is an example of how this should look:
Token Id - Go sequentially higher from 0. These should map exactly to the files that you added to the folder and named by token ID in the previous step.
Name - The name that you give to each token. This is the name that will display for your tokens on Aspen and other NFT platforms.
Description - The description that you give to each token.
External URL (optional) - Used only if you are hosting your own files for the NFTs, in which case those links would go here.
Number Of Files - The default would be 1, which you should enter if your NFT is a single file. If you intend to have multiple files in your NFT, this would need to be increased accordingly. An example of using multiple files would be if you had a music NFT and you wanted to have a preview image displayed along with the play button for the music. In that case you would have 2 files, a .png and a .mp3 perhaps. You must also account for this when adding your files to the folder and by naming them accordingly. If the token ID is 1, then you would name your preview image file as "1_Image_0" and the .mp3 file would be named "1_Media_1" and so on.
Attributes/Properties/Traits (optional) - These columns are all specific to you and your collection. Add as many columns for as many traits as your NFTs will have. Here is an example of how this looks on the NFT page for a Bored Ape NFT:
Zip your folder.
On a windows PC, right click on your folder and then select "Compress to ZIP file".
On a Mac, Control-click your folder or tap it using two fingers, then choose Compress from the shortcut menu.
Upload your Zip file. From the "Add NFTs" section of Creator Tools, it is time to upload your Zip file. Please note that there is a size limitation of 1,800 MB. Click "Upload Zip File" and select your file. The process can take several minutes, but your NFTs will appear towards the bottom of the screen. We recommend that you click into some of them to check that everything was created as you expected.