# Sharpen
Sharpening is a powerful tool to emphasize texture and details, especially on smaller images, e.g. thumbnails. Cloudimage can apply an **unsharp mask** filter which will make your image look sharper. You can specify the filter radius (X) in pixels.
**sharp=X**
## Examples
| Preview | Syntax |
| -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
|  | Only resize:
/samples.scaleflex.com/darkside.jpg?w=300
|
|  | Resize and sharpen:
/samples.scaleflex.com/darkside.jpg?w=300&sharp=3
|
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