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How to use Sharpen Image

Sharpening increases local edge contrast to make existing detail appear clearer. Moderate use can help a slightly soft image, while excessive use creates halos and noise.

Choose an image and begin with a low sharpness value.
Inspect edges, hair, text, and noisy areas at normal size.
Increase gradually and download the most natural-looking result.

Practical example

A slightly soft scanned diagram can receive mild sharpening to make its lines easier to read.

Useful tips

Resize before final sharpening.
Watch for bright or dark halos around edges.
Do not expect sharpening to fix severe motion blur.

Limitations

Sharpening emphasizes existing contrast and cannot reconstruct detail that was never captured.