> ## Documentation Index
> Fetch the complete documentation index at: https://docs.toapis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Gemini-3-Pro 이미지 생성

> Generate images using Google Gemini 3 Pro model, with powerful image generation capabilities

* Google Gemini 3 Pro powerful image generation model (Nano banana2)
* Use model parameter to select `gemini-3-pro-image-preview` model
* Supports text-to-image generation
* Async task management, query results by task ID

<Warning>
  **Important Change**: For better performance and cost control, we no longer support passing base64 image data directly in `image_urls`. Please use the [Upload 이미지 API](../../uploads/images) first to upload images and get URLs, then call this endpoint.
</Warning>

## Authorizations

<ParamField header="Authorization" type="string" required>
  All endpoints require Bearer Token authentication

  Get your API Key from the [API Key Management Page](https://toapis.com/console/token)

  Add to request header:

  ```
  Authorization: Bearer YOUR_API_KEY
  ```
</ParamField>

## Body

<ParamField body="model" type="string" default="gemini-3-pro-image-preview" required>
  Image generation model name

  모델 alias: `nano-banana-pro`

  Example: `"gemini-3-pro-image-preview"`
</ParamField>

<ParamField body="prompt" type="string" required>
  Text description for image generation

  The upstream model input limit is 65,536 tokens. ToAPIs does not add a 1000-character cap.
</ParamField>

<ParamField body="size" type="string">
  Image generation aspect ratio

  Supported formats:

  * Ratios: `1:1`, `2:3`, `3:2`, `3:4`, `4:3`, `4:5`, `5:4`, `9:16`, `16:9`, `21:9`
</ParamField>

<ParamField body="n" type="integer" default={1}>
  Number of images to generate

  Fixed at 1

  **⚠️ Note:** Must be a pure number (e.g. `1`), do not add quotes, otherwise it will error
</ParamField>

<ParamField body="metadata" type="object">
  Metadata parameters for passing additional configuration options

  <Expandable title="Supported metadata fields">
    <ParamField body="resolution" type="string" default="1K">
      Output image resolution

      Supported values:

      * `1K` - 1K resolution (default)
      * `2K` - 2K resolution
      * `4K` - 4K resolution
    </ParamField>

    <ParamField body="orientation" type="string">
      Image orientation

      Supported values:

      * `landscape` - Landscape
      * `portrait` - Portrait
    </ParamField>
  </Expandable>
</ParamField>

<ParamField body="image_urls" type="object[]">
  List of reference image URLs for image-to-image or image editing

  <Expandable title="Detailed field description">
    <ParamField body="url" type="string" required>
      Image URL address

      **⚠️ URL format only (base64 no longer supported)**

      * Publicly accessible image URL (http\:// or https\://)
      * Example: `https://example.com/image.jpg`
      * You can use the [Upload 이미지 API](../../uploads/images) to upload local images and get URLs

      **Limitations:**

      * Single image must not exceed 10MB
      * Supported formats: .jpeg, .jpg, .png, .webp
    </ParamField>
  </Expandable>

  **Limit:** Maximum 14 images
</ParamField>

## 응답

<ResponseField name="id" type="string">
  Unique task identifier for status queries
</ResponseField>

<ResponseField name="object" type="string">
  Object type, always `generation.task`
</ResponseField>

<ResponseField name="model" type="string">
  모델 name used
</ResponseField>

<ResponseField name="status" type="string">
  Task status

  * `queued` - Queued for processing
  * `in_progress` - Processing
  * `completed` - Successfully completed
  * `failed` - Failed
</ResponseField>

<ResponseField name="progress" type="integer">
  Task progress percentage (0-100)
</ResponseField>

<ResponseField name="created_at" type="integer">
  Task creation timestamp (Unix timestamp)
</ResponseField>

<ResponseField name="metadata" type="object">
  Task metadata
</ResponseField>

<RequestExample>
  ```bash cURL theme={null}
  curl --request POST \
    --url https://toapis.com/v1/images/generations \
    --header 'Authorization: Bearer <token>' \
    --header 'Content-Type: application/json' \
    --data '{
      "model": "gemini-3-pro-image-preview",
      "prompt": "Futuristic city skyline with neon lights",
      "size": "16:9",
      "n": 1,
      "metadata": {
        "resolution": "1K",
        "orientation": "landscape"
      }
    }'
  ```

  ```bash cURL (Image-to-Image) theme={null}
  curl --request POST \
    --url https://toapis.com/v1/images/generations \
    --header 'Authorization: Bearer <token>' \
    --header 'Content-Type: application/json' \
    --data '{
      "model": "gemini-3-pro-image-preview",
      "prompt": "Enhance the colors and details of this city photo",
      "size": "16:9",
      "n": 1,
      "metadata": {
        "resolution": "2K"
      },
      "image_urls": ["https://example.com/city.jpg"]
    }'
  ```

  ```python Python theme={null}
  import requests

  response = requests.post(
      "https://toapis.com/v1/images/generations",
      headers={
          "Authorization": "Bearer your-ToAPIs-key",
          "Content-Type": "application/json"
      },
      json={
          "model": "gemini-3-pro-image-preview",
          "prompt": "Futuristic city skyline with neon lights",
          "size": "16:9",
          "n": 1,
          "metadata": {
              "resolution": "1K",
              "orientation": "landscape"
          }
      }
  )

  task = response.json()
  print(f"Task ID: {task['id']}")
  print(f"Status: {task['status']}")
  ```

  ```python Python (Image-to-Image) theme={null}
  import requests

  response = requests.post(
      "https://toapis.com/v1/images/generations",
      headers={
          "Authorization": "Bearer your-ToAPIs-key",
          "Content-Type": "application/json"
      },
      json={
          "model": "gemini-3-pro-image-preview",
          "prompt": "Enhance the colors and details of this city photo",
          "size": "16:9",
          "n": 1,
          "metadata": {
              "resolution": "2K"
          },
          "image_urls": ["https://example.com/city.jpg"]
      }
  )

  task = response.json()
  print(f"Task ID: {task['id']}")
  print(f"Status: {task['status']}")
  ```

  ```javascript JavaScript theme={null}
  const response = await fetch('https://toapis.com/v1/images/generations', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer your-ToAPIs-key',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      model: 'gemini-3-pro-image-preview',
      prompt: 'Futuristic city skyline with neon lights',
      size: '16:9',
      n: 1,
      metadata: {
        resolution: '1K',
        orientation: 'landscape'
      }
    })
  });

  const task = await response.json();
  console.log(`Task ID: ${task.id}`);
  console.log(`Status: ${task.status}`);
  ```

  ```javascript JavaScript (Image-to-Image) theme={null}
  const response = await fetch('https://toapis.com/v1/images/generations', {
    method: 'POST',
    headers: {
      'Authorization': 'Bearer your-ToAPIs-key',
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      model: 'gemini-3-pro-image-preview',
      prompt: 'Enhance the colors and details of this city photo',
      size: '16:9',
      n: 1,
      metadata: {
        resolution: '2K'
      },
      image_urls: ['https://example.com/city.jpg']
    })
  });

  const task = await response.json();
  console.log(`Task ID: ${task.id}`);
  console.log(`Status: ${task.status}`);
  ```
</RequestExample>

<ResponseExample>
  ```json 200 theme={null}
  {
    "id": "task_img_abc123def456",
    "object": "generation.task",
    "model": "gemini-3-pro-image-preview",
    "status": "queued",
    "progress": 0,
    "created_at": 1703884800,
    "metadata": {}
  }
  ```
</ResponseExample>