🔺 Image Sharpener Tool

Our sharpener works best on slightly soft or mildly blurry images. It can significantly improve photos that are just out of focus, but severely blurred or motion-blurred photos may not be fully recoverable. For best results, start with the Landscape or Product preset and increase Amount gradually.

Amount controls the intensity of the sharpening effect — higher values create stronger edge contrast. Radius determines how many pixels around edges are affected — smaller radius (0.5-1.5) sharpens fine details like hair and texture, larger radius (2-5) creates more dramatic edge contrast for softer images. Start with 1.5 radius and adjust from there.

Threshold prevents noise amplification by ignoring small brightness differences. Lower threshold (0-3) sharpens everything, which can amplify grain/noise. Higher threshold (5-10) only sharpens stronger edges, protecting smooth areas from noise. For clean images, use lower threshold (2-3). For noisy images, use higher threshold (5-8).

The Portrait preset (Amount: 40, Radius: 1.2, Threshold: 8) is designed specifically for people photos. It enhances eyes, hair, and clothing texture while protecting skin from becoming oversharpened or unnatural. For group photos, start here and increase Amount slightly if needed.

Original Size preserves maximum quality — ideal for printing or further editing. 1920px (HD) is great for desktop viewing and high-quality social media. 1080px (Full HD) is perfect for Instagram, Facebook, and most online sharing. PNG format preserves lossless quality, while JPEG offers smaller file sizes with adjustable compression.

Absolutely! All processing happens locally in your browser using JavaScript Canvas API. Your images never leave your device — no uploads, no servers, no third parties. This makes it 100% secure for personal photos, client work, and any sensitive images.