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FlixMLFlixML Studioopen-source generative AI image and video tool

SDXL Image-to-Image

Generate SDXL image variations from a source image using prompt guidance and denoise strength

Workflow id: sdxl_img2img · Image → Image

Calling it

POST /api/image/generate
{
  "workflow": "sdxl_img2img",
  "prompt": "...",
  "image": "...",
  "checkpoint": "..."
}

Params

Every input this workflow takes. Your install is the source of truth:GET /api/workflows/sdxl_img2img returns these as they are on your machine.

  • prompt · string · required
    Comma-separated tags describing the image you want out, not the change you want made — this is a re-render of the source at `denoise` strength, not an instruction-following edit. 'restyled as an oil painting' works because it is a description of the result; 'make the sky darker' does not, because nothing here reads commands. For an edit you can phrase as an instruction, use flux2_klein_edit or qwen_pose_edit instead. Same tag syntax as sdxl_base: subject first, `(term:1.2)` to weight a term. Keep the prompt consistent with what is already in the frame — at the 0.25-0.45 denoise this workflow is built for, a prompt that contradicts the source fights it and smears.
  • image · string · required
    Source image filename or Studio output path
  • checkpoint · string · required
    SDXL checkpoint model filename
  • negative_prompt · string · optional
    What to steer away from, same tag syntax. Keep it to defects you actually see — 'blurry, low quality, watermark'.
  • width · integer · default 832
  • height · integer · default 1216
  • seed · integer · optional
    Optional. Leave it out and every run is a new random take. Send a seed only to remake an image exactly: the seed a job used is in its record.
  • steps · integer · default 28
  • cfg · float · default 7
  • sampler · string · default dpmpp_2m
  • scheduler · string · default karras
  • denoise · float · default 0.35
    Lower preserves the source image more; 0.25-0.45 is good for identity-preserving variations