Upscale an Image 4× with AI

Unlike a plain resize that just stretches pixels, AI upscaling reconstructs detail and edges, so enlarged photos look crisp instead of blurry.

ImgScale runs the Real-ESRGAN model on your own device with WebGPU — nothing is uploaded, and there is no signup or watermark.

How to upscale an image 4×

1. Open the upscaler and drop your image.
2. Pick the AI mode and a scale (up to 4×).
3. Wait for processing, then download the enlarged result.

FAQ

Is the AI upscaler really free?

Yes — it's free with no signup or watermark, and the model runs locally in your browser.

Are my photos uploaded to a server?

No. The AI model runs on your device, so your images never leave your browser.

How is AI upscaling different from resizing?

Resizing only stretches existing pixels and looks soft. AI upscaling predicts new detail, producing sharper, cleaner enlargements.

What makes it fast or slow?

On devices with WebGPU it's quick; without it, large images fall back to slower processing, so smaller images upscale fastest.

Related: AI upscaler · How AI upscaling works · Fix a blurry photo · Enlarge without quality loss