You can modify the text layer with this field
Example: "Hello World"
API Documentation
Create an image from a template
application/json
Optional custom S3 configuration. If provided, the generated file will be stored in your S3-compatible storage instead of the default Bannerify storage.
Template modifications as the API array format, an object shorthand, or a JSON string. Object values map to text by default, while nested objects keep fields such as src, qrcode, rows, or chart.
{
"headline": "Summer sale",
"photo": {
"src": "https://example.com/photo.png"
}
}