Free Image Sharpener - Enhance Photos Online
Sharpen blurry images with adjustable intensity and radius. Real-time before/after comparison with unsharp mask algorithm.
Drag & drop an image, or click to upload
JPG, PNG, WebP · Single file
No files are uploaded to any server. All processing happens locally in your browser.
Frequently Asked Questions
How does image sharpening work?
The tool uses an unsharp mask algorithm. It creates a slightly blurred copy of your image and compares it to the original. Differences are amplified and added back, enhancing edges and fine details.
What settings should I use?
For most photos, an amount of 100-150% with a radius of 1-2px works well. For web-optimized images, try 50-80% amount. Over-sharpening can create visible halos, so use the before/after preview to find the right balance.
Can I sharpen a blurry photo?
Sharpening enhances existing edge details but cannot recover information lost to motion blur or out-of-focus blur. It works best on slightly soft images that need a clarity boost.
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