---
title: "Image Upscaler: Enlarge a Photo 2x on Your Device"
description: "Enlarge a small photo to twice its width and height with an AI model that runs in your browser. The first run downloads a model once, then it works from cache."
canonical: https://toolsugar.com/tools/image-upscaler
image: https://toolsugar.com/og.png
---

# Image Upscaler

ToolSugar enlarges a photo to twice its width and height with the Swin2SR super-resolution model, run on your own device through your browser, so the image is not uploaded. The first run downloads about 54 MB of model data. Images up to about 250,000 pixels are accepted, and a run can take a few minutes.

Runs on your device

## How it works

1. Add a small or low resolution photo. Images up to about 250,000 pixels fit, for example 500 by 500.
2. Read the note about the one time model download and press Enlarge 2x.
3. Wait while the model downloads on the first run and enlarges the picture. You can cancel at any time.
4. Check the doubled result and download the PNG.

## Key facts

- **Scale**: 2x width and 2x height
- **Model**: Swin2SR classical super-resolution, about 54 MB, downloaded once
- **Input limit**: About 250,000 pixels in total
- **Speed**: Roughly one to three minutes for a small image on a typical computer
- **Output**: A PNG named like your file with 2x added
- **Where it runs**: In your browser on your CPU, with no upload of your image

## Common uses

- Enlarge a small profile picture or avatar.
- Give an old low resolution photo more pixels before printing.
- Make a small web image usable as a larger banner.

## Questions

### Does AI upscaling add real detail?

It adds plausible detail that the model infers, which usually looks sharper than simple stretching. It cannot recover information that was never in the photo, so faces and text can still look soft.

### Why is there a limit on image size?

The model runs on your computer's processor inside the browser, and the work grows fast with the number of pixels. The limit keeps a run to a reasonable time and memory use.

### Why does the first run take longer?

The first run downloads the model, about 54 MB. Your browser keeps it afterward, so later runs skip the download.

### Is my photo uploaded?

No. Only the public model files are downloaded. Your photo is processed on your device.

[Read the Image Upscaler guide](https://toolsugar.com/blog/how-to-upscale-an-image)

## Related tools

- [Resize Image](https://toolsugar.com/tools/image-resizer)
- [Remove Background](https://toolsugar.com/tools/remove-background)
- [Compress Image](https://toolsugar.com/tools/image-compressor)