Stable Image Core - Sketch to Image

Convert simple sketches and line drawings into detailed, realistic images using Stability AI's Stable Image Core model. This advanced AI model combines your sketch input with text descriptions to generate high-quality images that maintain your structural vision while adding realistic details, textures, and colors.

Model Information

• Provider: Stability AI
• Model ID: stable-image
• Input: Sketch/line drawing + text prompt
• Output: High-quality generated image
• Formats: PNG, JPEG, WebP

Request Parameters

Field Name	Type	Example	Description	Required
type	text	SKETCH_TO_IMAGE	Feature identifier	✔️
model	text	stable-image	AI model identifier	✔️
conversationId	text	SKETCH_TO_IMAGE	Conversation context	✔️
promptObject.imageUrl	string	https://example.com/sketch.jpg	URL of the sketch image to transform	✔️
promptObject.prompt	string	A beautiful landscape with mountains and trees	Text description of desired output	✔️
promptObject.control_strength	number	0.7	How closely to follow the sketch (0.0-1.0)	✔️
promptObject.output_format	string	png	Output image format	✔️
promptObject.negative_prompt	string	blurry, low quality, distorted	What to avoid in the output	✖️
promptObject.seed	number	12345	Seed for reproducible results (0 for random)	✖️
promptObject.style_preset	string	photographic	Visual style to apply	✖️

Parameter Details

Control Strength:

• 0.0: Minimal sketch influence, more creative freedom
• 0.5: Balanced sketch guidance and AI creativity
• 1.0: Maximum sketch adherence, strict structural following

Output Format Options:

• png - Lossless, supports transparency
• jpeg - Compressed, smaller file size
• webp - Modern format, good compression

Style Preset Options:

• 3d-model - 3D rendered appearance
• analog-film - Vintage film aesthetic
• anime - Japanese animation style
• cinematic - Movie-like quality
• comic-book - Comic book illustration style
• digital-art - Digital artwork style
• enhance - Enhanced realism
• fantasy-art - Fantasy illustration style
• isometric - Isometric perspective
• line-art - Line art style
• low-poly - Low polygon 3D style
• modeling-compound - Clay-like appearance
• neon-punk - Cyberpunk neon style
• origami - Paper folding art style
• photographic - Realistic photographic style
• pixel-art - Pixel art style
• tile-texture - Tileable texture style

Endpoint

POSThttps://api.1min.ai/api/features

Request Headers

Field	Value
API-KEY	<api-key>
Content-Type	application/json

Code Example

cURL

curl --location 'https://api.1min.ai/api/features' \
--header 'API-KEY: <api-key>' \
--header 'Content-Type: application/json' \
--data '{
"type": "SKETCH_TO_IMAGE",
"model": "stable-image",
"conversationId": "SKETCH_TO_IMAGE",
"promptObject": {
  "imageUrl": "https://example.com/my-sketch.jpg",
  "prompt": "A beautiful mountain landscape at sunset with vibrant colors and detailed textures",
  "control_strength": 0.7,
  "output_format": "png",
  "negative_prompt": "blurry, low quality, distorted, ugly",
  "seed": 0,
  "style_preset": "photographic"
}
}'

JavaScript

fetch('https://api.1min.ai/api/features', {
method: 'POST',
headers: {
  'Content-Type': 'application/json',
  'API-KEY': 'YOUR_API_KEY'
},
body: JSON.stringify({
  type: 'SKETCH_TO_IMAGE',
  model: 'stable-image',
  conversationId: 'SKETCH_TO_IMAGE',
  promptObject: {
    imageUrl: 'https://example.com/my-sketch.jpg',
    prompt: 'A beautiful mountain landscape at sunset with vibrant colors and detailed textures',
    control_strength: 0.7,
    output_format: 'png',
    negative_prompt: 'blurry, low quality, distorted, ugly',
    seed: 0,
    style_preset: 'photographic'
  }
})
})

Python

import requests

url = "https://api.1min.ai/api/features"
headers = {
"Content-Type": "application/json",
"API-KEY": "YOUR_API_KEY"
}

data = {
"type": "SKETCH_TO_IMAGE",
"model": "stable-image",
"conversationId": "SKETCH_TO_IMAGE",
"promptObject": {
  "imageUrl": "https://example.com/my-sketch.jpg",
  "prompt": "A beautiful mountain landscape at sunset with vibrant colors and detailed textures",
  "control_strength": 0.7,
  "output_format": "png",
  "negative_prompt": "blurry, low quality, distorted, ugly",
  "seed": 0,
  "style_preset": "photographic"
}
}

response = requests.post(url, headers=headers, json=data)

Interactive Playground

API Playground

GETPOSTPUTDELETEhttps://api.1min.ai/api/features

AI Model *Stable Image Core - StabilityAI

Sketch Image URL *

Prompt *

Control Strength *

Output Format *PNGJPEGWebP

Negative Prompt

Seed

Style Preset None3D ModelAnalog FilmAnimeCinematicComic BookDigital ArtEnhanceFantasy ArtIsometricLine ArtLow PolyModeling CompoundNeon PunkOrigamiPhotographicPixel ArtTile Texture

Generated cURL Command:

curl -X POST "https://api.1min.ai/api/features" \
  -H "API-KEY: <your-api-key>" \
  -H "Content-Type: application/json" \
  -d '{
  "type": "SKETCH_TO_IMAGE",
  "model": "stable-image",
  "conversationId": "SKETCH_TO_IMAGE",
  "promptObject": {
    "imageUrl": "https://example.com/my-sketch.jpg",
    "prompt": "A beautiful mountain landscape at sunset with vibrant colors and detailed textures",
    "control_strength": 0.7,
    "output_format": "png",
    "negative_prompt": "blurry, low quality, distorted, ugly",
    "seed": 0,
    "style_preset": "photographic"
  }
}'

Response Format

{}

Tips for Best Results

1. Clear Sketches: Use clean, well-defined line drawings for better results
2. Detailed Prompts: Be specific about colors, textures, lighting, and atmosphere
3. Control Strength: Start with 0.7 and adjust based on how closely you want to follow your sketch
4. Negative Prompts: Use negative prompts to avoid unwanted elements or artifacts
5. Style Consistency: Choose style presets that match your artistic vision
6. Iterative Approach: Experiment with different seeds and settings to refine results

Authentication

This endpoint requires an API key to be provided in the API-KEY header.