I want to convert some NFT metadata JSON files to CSV for opensea.
JSON data like this:
{
"name": "5",
"description": "",
"external_url": "",
"image": "5.png",
"attributes": [
{
"trait_type": "Background",
"value": "DOT-6"
},
{
"trait_type": "Luckbox",
"value": "3"
}
],
"properties": {
"files": [
{
"uri": "5.png",
"type": "image/png"
}
],
"category": "image",
"creators": []
},
"compiler": "NFTexport.io"
}
The “attributes” array, need to be converted to
attributes[Background], attributes[Luckbox] DOT-6, 3
I used Data File Converter, figured out to converting these JSON file to CSV, in a minutes.
1. Open JSON file in DataFileConverter, set JSON options.

2. Set JSON custom columns.

3. Set CSV options.

4.”Next” and “Next”, convert, get the output CSV file.