Image Upscaler

Increase raster dimensions with browser interpolation. Choose a scale, try optional sharpening and check the resulting preview.

Use this when a layout needs a larger raster. Interpolation estimates new pixels from the original and sharpening can change edge contrast.

  • 100% free
  • No registration
  • On your device
  • Modern browser
  1. 1Choose files
  2. 2Choose options
  3. 3Download
Drag & drop your image hereor click the button below to choose a fileSelect images

or drag & drop files here

Images · Up to 50 MB per file.

Tip: You can also paste files directly (Ctrl+V / Cmd+V)

Files are processed on your device. See privacy details below for optional services.
This is resize + optional sharpen (browser canvas), not an AI/ML upscaler. Fine detail cannot be invented.

Your input stays on this device for this operation. We don’t upload or store it.

About Image Upscaler

Use this when a layout needs a larger raster. Interpolation estimates new pixels from the original and sharpening can change edge contrast.

Three scale factors

Enlarge by 2×, 4× or 8×.

Optional sharpening

Apply a simple sharpening pass.

How to use Image Upscaler

  1. 1

    Choose a raster image

    Choose an image

  2. 2

    Set scale and sharpening

    Set Make image larger to 2×, 4× or 8× and choose sharpening

  3. 3

    Review the larger image

    Review the preview and download the enlarged image

Formats and practical limits

One browser-decodable image → enlarged raster

  • Interpolation cannot reconstruct missing source detail. Sharpening can accentuate noise or create edge halos.
  • The source is capped at 20 MB. Output must fit 16 megapixels and 8,192 pixels per side.

Practical example

Choose 2× for a 300 × 200 image to produce 600 × 400 and compare the edges with sharpening off and on.

Further reading

Frequently Asked Questions

1 answers
Why is 8× unavailable for my file?

The requested output may exceed the canvas allocation bounds. Choose a lower scale.