# Upscale AI-generated images to 4K

**Use case:** 

Take images from Midjourney, FLUX, Stable Diffusion or any generator and upscale them 4x, from about 1000 px to about 4000 px on the long side. Works on a whole list in one run; each image returns its upscaled URL, width and height. Output as PNG to keep fine details.

## Input

```json
{
  "imageUrls": [
    "https://api.apify.com/v2/key-value-stores/MnVYERh4Bm47trebR/records/ai_elf",
    "https://api.apify.com/v2/key-value-stores/MnVYERh4Bm47trebR/records/ai_spain"
  ],
  "maxImagesPerItem": 1,
  "scale": "4",
  "outputFormat": "png",
  "maxOutputMegapixels": 16,
  "maxImages": 100
}
```

## Output

```json
{
  "outputUrl": {
    "label": "Upscaled",
    "format": "string"
  },
  "inputUrl": {
    "label": "Input",
    "format": "string"
  },
  "width": {
    "label": "W",
    "format": "integer"
  },
  "height": {
    "label": "H",
    "format": "integer"
  },
  "factor": {
    "label": "Factor",
    "format": "number"
  },
  "status": {
    "label": "Status",
    "format": "string"
  },
  "error": {
    "label": "Error",
    "format": "string"
  }
}
```

## About this Actor

This example demonstrates how to use [Image Upscaler API — Upscale Images 2x/4x, Pay per Image](https://apify.com/sherwood/image-upscaler-batch.md) with a specific input configuration. Visit the [Actor detail page](https://apify.com/sherwood/image-upscaler-batch.md) to learn more, explore other use cases, and run it yourself.


## How to integrate an Actor?

This Task's input is already configured above. Use it as-is rather than inventing a new one.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For full API examples (JavaScript, Python, CLI, MCP, OpenAPI), see this Task's Actor page: https://apify.com/sherwood/image-upscaler-batch.md

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).