Car Background Removal (Binary)#

Cut the car out of a photo and return an RGBA PNG with its cast shadow baked in, at the photo's framing.

Cost: 1 credit on HTTP 200.

The biggest car in the photo is used. Windows are made see-through by default (reconstruct_windows=true).

To get separate layers (composite, cutout, shadow, background), use /v1.0/car-layers-base64. Response metadata is returned in X-Input-Dimensions, X-Processed-Dimensions, and X-Was-Downscaled.

Endpoint#

POST /v1.0/car-image-without-background

Base URL: https://api.withoutbg.com · Spec: openapi.json

Example (cURL)#

cURL

curl -X POST \
  -H "X-API-Key: $WITHOUTBG_API_KEY" \
  -F "file=@/path/to/input.jpg" \
  --output result.png \
  "https://api.withoutbg.com/v1.0/car-image-without-background"

Authentication#

Provide your API key in the request header:

API key header

X-API-Key: <your_api_key>

Request#

Content-Type: multipart/form-data

Fields#

file (string, required) — Car image file (JPEG, PNG, WebP, AVIF, HEIC, TIFF, BMP, GIF). Maximum size: 20.0 MB.
reconstruct_windows (boolean, optional) · default true — When true (default), run car window reconstruction: opens glass interiors while keeping the car outline. Set false to skip and use the base silhouette alpha only.

Response#

Success Content-Type: image/png

Response headers#

X-Input-Dimensions — Decoded input size as `width,height` (pixels).
X-Processed-Dimensions — Size after server prep downscale (longest side / megapixel caps) as `width,height`. Not the model inference resolution (~1024 long side).
X-Was-Downscaled — Whether the input was downscaled during server prep (`true`/`false`).

Errors#

Status	Description	Detail
`401`	Invalid API Key	Invalid API Key
`402`	Insufficient credit. Please top up API credits.	Insufficient credit. Please top up API credits.
`403`	Credits Expired. Please top up API credits. If you have existing credits, they will be reactivated.	Credits Expired. Please top up API credits. If you have existing credits, they will be reactivated.
`413`	File size too large. Maximum file size is 20.0 MB.	File size too large. Maximum file size is 20.0 MB
`415`	Unsupported Media Type. Supported formats are: JPEG, PNG, WebP, AVIF, HEIC, TIFF, BMP, GIF.	Unsupported Media Type. Supported formats are: JPEG, PNG, WebP, AVIF, HEIC, TIFF, BMP, GIF.
`422`	Validation Error	Validation Error
`429`	Rate limit exceeded (product policy: 30 requests/minute per API key). May be returned by the API gateway. Retry with exponential backoff.	{"error":"Too Many Requests","status":429,"message":"Rate limit exceeded. Please try again later"}
`500`	Internal Server Error	Internal Server Error. Please contact support: contact@withoutbg.com

Car Background (Binary) — POST /v1.0/car-background
Car Layers (Base64) — POST /v1.0/car-layers-base64

Contract sections are generated at build time from OpenAPI. Markdown mirror: /docs/pro-model/car-background-removal-binary.md