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Sharpen → Any Photo

Five real kernels, one canvas — sharpen it right.

Unsharp Mask, High-Pass, Laplacian, Edge Enhance and Detail Boost, each with its own strength, radius and threshold. A halo guard stops the overshoot, a soft-focus detector suggests settings automatically, and a paint-on mask keeps the sharpening off skin or sky.

Halo-artifact guard Soft-focus auto-detect Selective paint mask Nothing uploaded — runs locally

Source

Drop a photo, or click to browse
batches supported

See the difference before you commit

Split the frame, hold space to blink-compare, or drop in the loupe to check pixels.

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Possible halo riskThis setting is pushing bright fringes along strong edges. Lower Amount, raise Threshold, or leave Halo guard on.
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Soft focus detectedSuggested settings are ready.
No image loaded Drop a photo on the left. Everything runs in your browser — nothing is uploaded anywhere.
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Paint mask is on — click and drag on the image to reveal sharpening only in that area.
Edge energy — Algorithm — Space hold to compare · [/] amount
Five real kernelsUnsharp Mask, High-Pass, Laplacian, Edge Enhance and Detail Boost — not one filter dressed up five ways.
Halo-artifact guardClamps the sharpening delta against local contrast so edges don't blow out into a bright fringe.
Soft-focus auto-detectReads the image's edge energy and suggests an Amount and Radius instead of guessing.
Paint-on maskSharpen textures and edges while leaving skin, sky or backgrounds untouched.
Which algorithm should I use?

Unsharp Mask is the safe default for most photos. Detail Boost is gentler, for images that only need a small clarity lift. Laplacian and Edge Enhance are more aggressive and suit text, line art or product shots. High-Pass gives a softer, more natural overlay-style result.

What does the halo guard actually do?

Sharpening works by exaggerating the contrast at edges. Push it too far and you get a visible bright or dark fringe — a halo — around high-contrast boundaries. The guard measures the local contrast around each pixel and caps how far the sharpening is allowed to push it.

Is my photo uploaded anywhere?

No. Every pixel is processed in your browser using the Canvas API. Nothing leaves your device, and closing the tab clears everything.