Sharpen an image
One slider, live preview. Brings back the edge that soft focus or heavy downscaling took away.
How to sharpen an image
- Drop an image in the zone above.
- Drag the amount slider until edges look crisp. Past a certain point halos appear, back off a notch.
- Choose an output format and download at full resolution.
How sharpening works here
This is a classic unsharp mask: the image is compared against a slightly blurred copy of itself, and the differences, which are the edges, get amplified. It cannot invent detail that was never captured, but it makes real detail read clearly again.
Sharpening is the standard last step after resizing photos down, which is why it pairs well with the resize tool.
Like everything on this site, the tool runs entirely in your browser. Your image is never uploaded, and the server only serves this page.
More tools
- Adjust brightness, contrast and saturation
- Pick colours from an image
- Crop an image
- Combine images into one
- Resize an image
- Rotate or flip an image
- Blur part of an image
- Redact an image
- Make a background transparent
- View and remove EXIF data
- Watermark an image
- Compress an image to a target size
- Generate favicons
- Round image corners or crop a circle
- Split an image into a grid
- Bulk resize images
- Convert images to a PDF
- Convert a PDF to images
- Convert an image to Base64