About Sharpen Image

Sharpening increases contrast along edges, which the eye reads as more detail. It is the standard finishing step after resizing a photograph, since scaling always softens an image slightly.

How to use it

1. Upload the image.
2. Apply sharpening.
3. Download the sharpened result.

Worth knowing

Sharpening cannot recover detail that was never captured — it emphasises what is there. Overdoing it produces bright halos along edges and makes noise far more obvious.

Common questions

Will it fix a blurry photo?

No. Motion blur and missed focus are lost information; sharpening only exaggerates existing edges.

When should I sharpen?

Last, after resizing and cropping, so you are sharpening the pixels you are actually going to publish.