Sharpen image
Make slightly blurry photos sharper with an unsharp mask filter, adjusting the intensity, without uploading the image to servers.
Sharpen your photos
Available in: 
Sharpen image: what it is for
Upload your photos and adjust the intensity and radius of the sharpening filter. The tool applies an unsharp mask, which enhances edges and details of slightly soft or resized photos, and shows the result to download.
The image is not uploaded to any server: everything happens in your browser.
How to use
- Upload the photo.
- Adjust intensity and radius.
- Download the sharper image.
When to use it
- Improve product photos.
- Enhance photos shrunk for the web.
- Make photos of documents easier to read.
Frequently asked questions
Can it fix a very blurry photo?
No. The filter enhances edges and details that already exist, which improves slightly soft or resized photos. Very shaky or out-of-focus photos do not gain details that were never captured.
What intensity should I use?
Start at 50% to 80%. High values create light halos around edges and bring out the photo's noise.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 tools are free and run right in your browser.