Car Background Removal (Binary)#

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

Remove background from a car photo and return an RGBA PNG.

Cost: 1 credit on HTTP 200.

Preferred migration path for vehicle clients. Uses the dedicated car pipeline. Window reconstruction runs by default (reconstruct_windows=true): opens glass interiors while keeping the car outline; cutout RGB stays the original photo. Set reconstruct_windows=false to skip and use the base silhouette alpha only. Set include_shadow=true to bake a soft cast shadow into the cutout. For uncomposited cutout + shadow layers, use /v1.0/car-cutout-and-shadow-base64. Image-type classification is not offered (car photos are treated as photographic).

Binary sibling of /v1.0/car-image-without-background-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

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 (binary, required) — Car image file (JPEG, PNG, WebP, AVIF, HEIC, TIFF, BMP, GIF). Maximum size: 20.0 MB.
include_shadow (boolean, optional) — When true, generate a soft cast shadow under the car and bake it into the RGBA cutout (black shadow behind the object).
reconstruct_windows (boolean, optional) — When true (default), run car window reconstruction: opens glass interiors while keeping the car outline. Cutout RGB stays the original photo (unless include_shadow=true). 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`).
X-View-Azimuth-Deg — Estimated camera azimuth in degrees.
X-View-Elevation-Deg — Estimated camera elevation in degrees.
X-Camera-Focal-Length-Mm — Estimated focal length in mm.

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

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"

Car Background Removal (Base64) — POST /v1.0/car-image-without-background-base64
Car Cutout + Shadow (Base64) — POST /v1.0/car-cutout-and-shadow-base64

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