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Sharpen Image
Image
Sharpen blurry photos. Enhance details and improve image clarity.
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Sharpen
A phone photo that came out slightly soft, an old scan that lost some clarity, or an image that got a little blurry after resizing all share the same fix, boosting the contrast right at each edge so detail that's technically present but visually mushy reads as sharp again. This tool sharpens a blurry photo by enhancing exactly that edge detail, improving perceived clarity without changing the actual color or exposure of the image.
See moreSee less about the Sharpen Image
Useful for crisping up a slightly out-of-focus phone photo before printing it, improving the legibility of text in a scanned document photo, or restoring some perceived sharpness to an image that got soft after being resized or compressed.
Key features
- Clean interface
- Fast processing
- No signup required
- Works offline
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Quick answers for Sharpen Image
What does the Intensity slider actually change?
It scales a 3x3 sharpen convolution kernel from 0.1x to 3x strength, higher values push the edge-contrast effect further before the result is clamped back into the 0-255 color range.
How is the sharpening applied to my photo?
The image is drawn to a hidden canvas, then every pixel is recalculated from its 8 neighbors using a fixed edge-enhancing kernel, and the result replaces the original pixel data before being redrawn.
What format is the downloaded file?
A PNG named "sharpened-image.png", exported straight from the canvas after you click Apply Sharpen.