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Birefnet Background Removal

Integrate

Model id birefnet
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/birefnet?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "image": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

This request: ≈$0.002 2 API credits Run it on this page

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BiRefNet Background Removal #background-removal#segmentation#high-res#utility

Removes the background from a single image, with light, heavy or portrait variants and optional mask output

BiRefNet · Image

Your first result goes here

Build a request below and run it with your API key. Outputs are copied to our storage, kept forever or 7 days for free.

Build a request

Controls are generated from the model schema. The code and the price update as you change them.

•required image_url
Drop a file, or

URL identifying the image whose background will be removed.

Advanced operating_resolution · output_format · model · output_mask · refine_foreground
operating_resolution default 1024x1024

Processing resolution controls accuracy on high-resolution source images; selecting a larger resolution improves that accuracy.

output_format default png

Format for the resulting image.

default General Use (Light)

Background-removal model selection: 'General Use (Light)' corresponds to BiRefNet-DIS_ep580.pth, is the BiRefNet repository's original model, and is recommended for most uses. 'General Use (Heavy)' corresponds to BiRefNet-massive-epoch_240.pth and offers greater accuracy with slower processing. 'Portrait' corresponds to BiRefNet-portrait-TR_P3M_10k-epoch_120.pth and is trained specifically on portrait images.

POST /run/birefnet?wait=20 quote → $0.002
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.com/v1/run/birefnet?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "image": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  }'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.com/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Run this request

Your key stays in this browser: it is sent only to the Doitong API and saved (localStorage) only if you tick Remember. Get an API key

About Birefnet Background Removal

Segments the foreground of one image given by `image_url` and returns it with the background removed. The `model` option offers General Use (Light), General Use (Heavy) or Portrait. `operating_resolution` can be 1024x1024 or 2048x2048 for higher-resolution inputs. You can also return the mask with `output_mask` and pick png, webp or gif output.

Parameters

Send either the canonical name or the native name, not both. Canonical names

NameType DefaultAllowed Description
modeloptional
Typeenum
DefaultGeneral Use (Light)
General Use (Light)General Use (Heavy)Portrait
Background-removal model selection: 'General Use (Light)' corresponds to BiRefNet-DIS_ep580.pth, is the BiRefNet repository's original model, and is recommended for most uses. 'General Use (Heavy)' corresponds to BiRefNet-massive-epoch_240.pth and offers greater accuracy with slower processing. 'Portrait' corresponds to BiRefNet-portrait-TR_P3M_10k-epoch_120.pth and is trained specifically on portrait images.
operating_resolutionoptional
Typeenum
Default1024x1024
1024x10242048x2048
Processing resolution controls accuracy on high-resolution source images; selecting a larger resolution improves that accuracy.
output_maskoptional
Typeboolean
Defaultfalse
Controls whether the background-removal mask is included in the output.
refine_foregroundoptional
Typeboolean
Defaulttrue
Controls foreground refinement based on the estimated mask.
image_urlrequired image
Typeurl · image
URL identifying the image whose background will be removed.
output_formatoptional
Typeenum
Defaultpng
webppnggif
Format for the resulting image.
required Canonical name, also accepted

File parameters take a public https:// URL, a data: URI up to 10 MB, or the file_url of an upload. Files

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "birefnet",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 2,
    "usd": "0.002",
    "charged": 2,
    "refunded": 0
  },
  "input": {
    "image_url": "https://content.doitong.com/images/showcase/v3/gen_fox_cartoon.jpg"
  },
  "output": {
    "image": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200,
      "width": 1024,
      "height": 768
    },
    "mask_image": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200,
      "width": 1024,
      "height": 768
    }
  },
  "outputs": [
    {
      "type": "image",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "width": 1024,
      "height": 768,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.com/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
Your files, your choiceEvery outputs[].url is a copy on our storage: kept forever (paid per GB-month) or 7 days for free, by your account setting or ?storage=.
Same shape on every modeltype, url, content_type, width, height and duration, for images, video and audio alike. output is the model’s own result object.
Fields of output
image
object {url, content_type, file_name, file_size, width, height}Image after background removal.
mask_image
object {url, content_type, file_name, file_size, width, height} | nullMask applied during background removal.

More models: Background Removal

For AI agents: this page as Markdown is at https://doitong.com/en-US/developers/models/birefnet.md. All models and guides: https://doitong.com/developers/llms.txt