Unblur / Sharpen
Sharpen soft photos with a 3×3 convolution kernel (center 1+4f, arms −f, f = max(0.5, intensity)) — or add Gaussian/motion blur artistically. Intensity 1–10 (default 5); motion kernel caps at 15px with 0–360° angle; live 400px preview debounced 150ms; JPG/PNG/WebP output (quality default 0.92) — local processing, unlimited saves.
Runs on Canvas
How to Use the Unblur / Sharpen
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Frequently Asked Questions
What blur can it actually fix?
Mild softness and slight misfocus sharpen well — edges tighten visibly. Heavy motion streaks and severe defocus barely improve; no tool recovers detail that was never captured.
How far should I push sharpening?
Stop at the first sign of halos along edges or gritty noise in skies — intensity 5 of 10 is the default midpoint. The preview is a 400px downscale, so judge edges there, not fit-to-screen.
Sharpen before or after resize?
After — sharpen the final-size image once. Pre-resize sharpening wastes effort and amplifies artifacts.
Do soft photos leave the browser?
No — convolution runs locally in your browser on Canvas. Saves never touch a meter — downloads on local tools are unlimited.
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Last updated October 2026