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

# Upscaling

> Enhance images to 4K with AI upscaling models

# Image Upscaling

Enhance image quality and resolution with AI-powered upscaling. Choose between **Recraft Crisp** for sharp, clean results or **Topaz Pro** for premium 4x upscaling.

## 可用模型

### Recraft Crisp

**Sharp, Clean Upscaling**

* **Max Input:** 4MP (2000×2000)
* **Scale:** Up to 4x
* **Best for:** Graphics, logos, web content
* **Credit Cost:** 1 credit
* **Speed:** 30-60 seconds

### Topaz Pro

**Premium 4x Upscaling**

* **Max Input:** 16MP (4000×4000)
* **Scale:** Up to 4x
* **Best for:** Photography, print, high-end content
* **Credit Cost:** 3 credits
* **Speed:** 60-120 seconds

## 使用方法

### Quick Upscale

1. Go to `/upscale`
2. Upload your image
3. Select model (Recraft or Topaz)
4. Choose scale (2x or 4x)
5. Click **Upscale**

### Node System Workflow

```
[Image] → [Upscale Node] → [Export]
```

Or chain with generation:

```
[Prompt] → [Model Node (1K)] → [Upscale (4x)] → [Output: 4K]
```

## Cost Optimization

**Strategy:** Generate at lower resolution, upscale to 4K

* Direct 4K generation: 4 credits
* 1K generation (2cr) + Topaz upscale (3cr) = **5 credits**
* Result: Higher quality at similar cost

## 模型对比

| Feature       | Recraft Crisp   | Topaz Pro      |
| ------------- | --------------- | -------------- |
| **Max Input** | 4MP             | 16MP           |
| **Best For**  | Graphics, logos | Photos, prints |
| **Sharpness** | Very sharp      | Balanced       |
| **Cost**      | 1 credit        | 3 credits      |
| **Speed**     | Fast            | Slower         |

## 使用场景

* **E-commerce** — Upscale product photos for web/print
* **Marketing** — Enhance campaign imagery
* **Print** — Prepare images for large-format printing
* **Restoration** — Enhance old or low-quality images

## 最佳实践

* **Start with good quality** — Upscaling can't fix very poor images
* **Recraft for graphics** — Logos, text, illustrations
* **Topaz for photos** — Photography, realistic content
* **Chain with generation** — Generate 1K/2K, upscale to 4K

## 下一步

<CardGroup cols={2}>
  <Card title="Image Generation" icon="image" href="/cn/features/image-generation">
    Generate high-quality images
  </Card>

  <Card title="Image Editing" icon="paintbrush" href="/cn/features/image-editing">
    Edit before upscaling
  </Card>
</CardGroup>