Sharpen Image

Open in Editor

Enhance the sharpness of your image by increasing edge contrast. Choose kernel size for fine or coarse sharpening.

How to use Sharpen Image

  1. Upload your image using drag & drop or click to browse.
  2. Adjust the settings using the controls above.
  3. See the result instantly — processing happens in your browser.
  4. Download your processed image as a PNG file.

About Sharpen Image

Enhance the sharpness of your image by increasing edge contrast. Choose kernel size for fine or coarse sharpening. This tool is part of ImageToolbox's collection of free online image tools. It runs entirely in your browser — your images are never uploaded to our servers.