Image Editing
851-labs — Background Remove
Cheap, fast background removal for high volume.
POST /v2/images/background-remove — model: "851-bg-remove"
851-labs' transparent-background is a sub-cent, fast-path background remover. Use this when you're processing a large batch and don't need the cleanest possible alpha edge. Switch to Bria Background Remove for production-quality cut-outs.
See Image Editing overview for common request fields, response format, and error codes.
Model-specific parameters
| Parameter | Type | Description |
|---|---|---|
lab851BgRemoveParams.image | string | Source image URL. |
lab851BgRemoveParams.format | string | Output container. Values: "png" (alpha-preserving), "jpg". |
lab851BgRemoveParams.threshold | number | Mask threshold (0–1). Higher = more aggressive cutout. |
lab851BgRemoveParams.reverse | boolean | Invert the cutout. When true, the foreground is removed instead of the background — the subject is cut out and the original background is kept. |
lab851BgRemoveParams.background_type | string | Background style. Values: "rgba" (transparent), "map" (greyscale mask), "green", "white", "blur", "overlay". |
Credit cost
2 credits per generation.
Code examples
curl -X POST https://api.apiframe.ai/v2/images/background-remove \
-H "X-API-Key: afk_your_api_key_here" \
-H "Content-Type: application/json" \
-d '{
"model": "851-bg-remove",
"lab851BgRemoveParams": {
"image": "https://example.com/product.jpg",
"format": "png",
"background_type": "rgba"
}
}'import requests
response = requests.post(
"https://api.apiframe.ai/v2/images/background-remove",
headers={
"X-API-Key": "afk_your_api_key_here",
"Content-Type": "application/json",
},
json={
"model": "851-bg-remove",
"lab851BgRemoveParams": {
"image": "https://example.com/product.jpg",
"format": "png",
"background_type": "rgba",
},
},
)
print(response.json())const response = await fetch(
"https://api.apiframe.ai/v2/images/background-remove",
{
method: "POST",
headers: {
"X-API-Key": "afk_your_api_key_here",
"Content-Type": "application/json",
},
body: JSON.stringify({
model: "851-bg-remove",
lab851BgRemoveParams: {
image: "https://example.com/product.jpg",
format: "png",
background_type: "rgba",
},
}),
},
);
console.log(await response.json());Try it
POST
/v2/images/background-removeTry it