Sharpen Image
Sharpen blurry images using an unsharp mask convolution filter. Adjust intensity and radius.
- Free to use
- Browser-based processing
- No account required
- Files never uploaded
About Sharpen Image
Sharpen Image enhances detail in a soft or slightly blurry photo using an unsharp mask convolution filter, with adjustable intensity and radius so you can dial in the effect without over-sharpening. It's useful for rescuing photos that came out a touch soft. The filtering runs in the browser with no upload.
How to Use Sharpen Image
- 1
Upload an image
Add the photo you want to sharpen.
- 2
Adjust intensity and radius
Increase intensity for a stronger effect and tune the radius to control how wide the sharpening reaches around edges.
- 3
Download
Save the sharpened image once it looks right.
Frequently Asked Questions
How does sharpening work?
An unsharp mask increases contrast along edges, which the eye reads as more detail. Intensity sets how strong it is; radius sets how far it spreads.
Can sharpening fix a very blurry photo?
It helps soft photos look crisper, but it can't recover detail that was never captured. Heavy blur or motion blur won't fully reverse.
What happens if I sharpen too much?
Over-sharpening creates halos around edges and exaggerates noise. Back off the intensity if you see those artefacts.
Is my photo uploaded?
No. Sharpening runs in your browser.