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Super-resolution with local AI

AI image upscaler

Upscale a photo by 2x or 4x with Swin2SR models running directly in your browser.

Select an image

PNG, JPG, JPEG, or WebP, up to 20 MB. For AI upscaling, a maximum of 1200px on the longest side is recommended for 2x, or 600px for 4x.

Privacy:the image is processed locally. The AI model files are downloaded from the internet on the first run; your photo is not sent to UtiliTools Pro servers.

AI super-resolution for image upscaling

Unlike conventional upscaling, this tool uses AI models trained for super-resolution. The model analyzes the image and generates a version with more pixels and sharper visual detail.

2x super-resolution

Double the width and height using a specialized Swin2SR model.

4x super-resolution

Create a larger upscaled image using a model designed for real-world images.

AI in your browser

You don't need an external API or pay for every processed image.

Private processing

The picture remains on your device during processing.

Before and after

Compare original resolution and result before download.

PNG and JPG

Download the upscaled image in your preferred format.

How to upscale images with AI

1
Select a PNG, JPG or WebP photo.
2
Choose 2x or 4x upscaling, depending on the size you need.
3
Click “Upscale with AI” and wait for the model to finish.
4
Compare dimensions and download the result in PNG or JPG.

Free models for local use

The tool uses ONNX versions of Swin2SR compatible with Transformers.js. The base models are published under the Apache 2.0 license, and processing takes place in your browser.

Practical browser limits

Super-resolution uses a lot of memory. Dimension limits help prevent crashes, especially at 4x. For very large images, you can also use the standard UtiliTools Pro image enlarger.

Frequently asked questions

Does the tool really use artificial intelligence?

Yes. It uses superresolution Swin2SR models to generate a higher resolution image from the original photograph.

Can I upscale an image by 2x or 4x?

Yes. You can choose a 2x or 4x model. The 4x model requires more memory and usually takes longer in the browser.

Is my image uploaded to UtiliTools Pro?

No. Your browser downloads the AI model and processes the image locally on your device.

Why does the first run take longer?

The super-resolution model files are downloaded on the first run. Your browser can then reuse cached files.

Can AI recover any lost detail?

No. Super-resolution can produce sharper edges and textures, but it cannot guarantee that added details accurately represent information missing from the original.

Which formats does it support?

You can use PNG, JPG, JPEG and WebP images and download the result in PNG or JPG.