Adjustments
Sharpening
Sharpen images using three professional methods: adaptive sharpening, unsharp mask, and high-pass filtering. Includes presets for common use cases like web display, print preparation, and portrait enhancement. Fine-tune radius, amount, and threshold for precise control.
Features
- Three methods: adaptive, unsharp mask, and high-pass
- Radius, amount, and threshold controls
- Presets for web, print, portrait, and landscape
- Live preview with before/after comparison
- Batch sharpening with consistent settings
What you can do
- Sharpen product photos for crisp display on e-commerce sites
- Prepare images for print with appropriate sharpening levels
- Rescue slightly soft images from smartphone cameras
- Apply targeted sharpening to landscape and architecture photography
Self-hosted. Your images never leave your network.
SnapOtter runs entirely on your own infrastructure. Images processed with Sharpening are never uploaded to third-party servers. Deploy a single Docker container and process images with full privacy, no watermarks, and no usage limits. Open source under AGPL-3.0.
Frequently asked questions
- What is the best way to sharpen an image for the web?
- Use unsharp mask with a radius of 0.5-1.0, amount of 80-120%, and threshold of 2-4. This adds crispness without introducing visible halos around edges.
- What is the difference between unsharp mask and adaptive sharpening?
- Unsharp mask applies uniform sharpening across the entire image. Adaptive sharpening analyzes each region and applies more sharpening to edges while leaving smooth areas untouched, producing more natural results.
- Can over-sharpening damage an image?
- Sharpening is non-destructive in SnapOtter (the original is preserved). However, excessive sharpening creates visible halos around edges and amplifies noise. Use the preview to find the right balance.
Ready to try Sharpening?
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