mtools.lol

Image Upscaler

Enlarge an image 2×, 3× or 4× with high-quality resampling and sharpening.

How it works

  1. 1Upload your image.
  2. 2Pick 2×, 3× or 4× and whether to sharpen.
  3. 3Download the larger image.

Features

  • Lanczos resampling, the sharpest classic method.
  • Optional sharpening to keep edges crisp.
  • Up to 50 megapixels output.
  • Transparency kept in PNG and WebP.

Frequently asked questions

Is this AI upscaling?

No. It enlarges with high-quality resampling and sharpening. It can't invent detail the original doesn't have, but it avoids blocky or blurry results.

What is the largest result?

50 megapixels, for example about 8,600 × 5,800 pixels.

Is there a size limit?

Images up to 50 MB and 80 megapixels.