image tools• Quick Tool
Image Sharpening Tool
Make soft photos pop with professional unsharp masking and high-pass frequency enhancement.
High-speed client-side GPU canvas processing. Completely private.
Supports high-resolution PNG, JPG, WebP
Enhancement Engine
Sharpness Boost65%
Zero cloud uploads. Zero data leakage.
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How to Use Image Sharpening
1
Upload Image
Select any image needing extra crispness.
2
Adjust Sharpen Amount
Tune the unsharp mask radius and threshold.
3
Download Crisp Photo
Export in original full resolution.
About Image Sharpening
Subtracts a Gaussian-blurred copy from the original image to generate a high-pass detail mask, which is multiplied by an intensity weight and added back.
Supported Formats
JPGPNGWebP
Operational Limits
- •Over-sharpening can produce halo artifacts along high-contrast edges
Key Features
- Unsharp mask convolution
- High-pass frequency slider
- Zero loss in original resolution
Frequently Asked Questions
Sharpening enhances micro-contrast on existing pixels; upscaling increases the total pixel resolution.