Handitab

Sharpen Image

Sharpen a soft or slightly blurry image by boosting edge contrast with an adjustable strength, then download the crisper PNG, JPG, or WebP.

About Sharpen Image

Sharpening makes edges in a picture look crisper by increasing the contrast between neighboring pixels. This tool runs a 3 by 3 convolution on the red, green, and blue channels: each pixel is weighted up and its four direct neighbors are subtracted, scaled by the strength from 0.1 to 3. The outermost row of pixels is left as is. High strength also amplifies noise and compression artifacts.

How to use Sharpen Image

  1. Choose an image, or drag it onto the upload area. The file is read by your browser and is not uploaded.
  2. Set "Strength". The preview updates as you change them.
  3. Check the preview, then press "Download result" to save the file.

Questions about Sharpen Image

Can sharpening fix an out-of-focus or motion-blurred photo?

Only slightly. Sharpening raises contrast along edges that already exist. It cannot rebuild detail that the camera never recorded, so a badly blurred photo gains halos and noise more than clarity.

Runs in your browser. Page last updated .

More image tools

All 73 image tools
Social Media Image ResizerResize and crop a photo to common social media sizes such as a square post, 9:16 story, 16:9 thumbnail, link preview, or profile header.SVG Blob GeneratorGenerate a random organic blob shape as SVG: set the number of points, irregularity, and fill color, then copy or download the code.SVG OptimizerShrink SVG code by removing comments, editor metadata, and extra whitespace and by rounding long decimals, then compare the size.SVG to CSS ConverterConvert SVG code into a CSS background-image with a URL-encoded data URI, so the graphic loads without a separate image file.SVG ViewerPaste SVG code to see it rendered, check its width, height, and viewBox, count its elements, and download it as an SVG file.SVG Wave GeneratorGenerate a smooth SVG wave for a section divider: set the number of peaks, height, and color, flip it, then copy or download the code.