Blur Background

Blur the background of an image while keeping the subject sharp. The AI model isolates the subject, applies a blur to the original background, and composites the sharp subject on top.

API Endpoint

POST /api/v1/tools/blur-background

Accepts multipart form data with an image file and a JSON settings field.

Parameters

Parameter	Type	Required	Default	Description
intensity	integer	No	50	Blur intensity (1-100)
feather	integer	No	0	Edge feathering radius (0-20)
format	string	No	"png"	Output format: png or webp

Example Request

curl -X POST http://localhost:1349/api/v1/tools/blur-background \
  -H "Authorization: Bearer si_your-api-key" \
  -F "[email protected]" \
  -F 'settings={"intensity": 75, "feather": 3}'

Example Response

{
  "jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
  "async": true
}

Track progress via SSE at GET /api/v1/jobs/{jobId}/progress. When the job completes, the SSE stream emits a completed event with the download URL.

Notes

• This is an AI-powered tool that returns 202 Accepted and processes asynchronously. Connect to the SSE endpoint to receive progress updates and the final result.
• Requires the background-removal feature bundle to be installed. Returns 501 if the bundle is not available.
• Higher intensity values produce a stronger blur effect. Values above 80 create a pronounced bokeh-like separation.
• HEIC, RAW, PSD, and SVG inputs are automatically decoded before processing.