Transparency Mask

Provides detailed transparency data. It is great for image compositing, graphical enhancements, and precise background manipulation.

Base64 Request & Response

Get detailed transparency masks via Base64 - send one API request and receive a JSON response with precise alpha channel data.

curl --request POST \
  --url https://api.withoutbg.com/v1.0/alpha-channel-base64 \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --data '{
  "image_base64": "/9j/4AAQSkZJRgABAQAA..."
}'

Which returns alpha matte as a base64 encoded string.

1{"alpha_base64": "/9j/4AAQSkZJRgABAQAA..."}

Binary Image Request & Response

Send and receive binary image data directly for efficient processing and storage of alpha channel information.

curl --request POST \
  --url https://api.withoutbg.com/v1.0/alpha-channel \
  --header 'Content-Type: multipart/form-data' \
  --header 'X-API-Key: YOUR_API_KEY' \
  --form file=@/input-image.jpg

Status Codes