Composite alpha onto color
POST /v1/process/alpha-to-color
POST
/v1/process/alpha-to-color
Composite an image with transparency onto a solid color background. Useful for flattening PNGs with alpha channels for formats that don’t support transparency (JPEG).
This is a free operation — no credits charged.
Authorizations
Section titled “Authorizations ”Request Body
Section titled “Request Body ”object
color
Hex color to composite alpha onto (default #FFFFFF).
null | string
input_image_url
required
HTTPS URL of the image with transparency.
string
Responses
Section titled “ Responses ”OK
object
content_type
MIME type of the output image.
string
expires_at
ISO 8601 expiry time of the signed URL.
string
image_url
Signed URL of the processed image. Expires in 1 hour.
string
operation
Processing operation performed.
string
Bad Request
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error
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Unauthorized
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Payment Required
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Forbidden
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Not Found
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Conflict
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Unprocessable Entity
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Too Many Requests
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Unavailable For Legal Reasons
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Internal Server Error
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Bad Gateway
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Service Unavailable
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