Sharpen Effect

Workflow & Usage

1. Add your images
   Drag & drop, paste, or click to select JPEG/PNG/WebP files. Previews load fast and respect EXIF rotation automatically.

2. Set your global sharpening amount
   Adjust the main slider (0–100%) to control overall clarity:

   • 0% → Original
   • 20–40% → Subtle enhancement
   • 40–60% → Crisp detail
   • 60–100% → Strong, dramatic sharpening

3. Fine-tune each image
   Click Edit on any preview to open the modal.
   Increase or reduce sharpening specifically for that image using the per-image slider.

4. Choose what to export
   Toggle Include, remove items, or reset all settings.

5. Export your results

   • Download: Save a single processed image.
   • Download all as ZIP: Export all included images in one batch.
     All files stay in their original format (JPEG → JPEG, PNG → PNG, WebP → WebP).

Everything runs locally — no upload, no waiting, no privacy concerns.

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Use Cases

• Increase clarity in handheld photos
  Clean up motion softness or slight focus issues.

• Sharpen product shots
  Enhance texture, edges, and perceived detail for catalogs or e-commerce listings.

• Prepare crisp social media graphics
  Make text, edges, and foreground elements pop.

• Art direction & creative editing
  Combine with Tint, Duotone, Vignette, or Posterize to build stylized looks.

• Batch processing workflows
  Apply consistent sharpness across photo sets quickly.

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Tips for Best Results

• Don’t over-sharpen.
  Most natural photos look best at 20–40%.

• Use higher values for textures.
  Architecture, landscapes, and product photos tolerate 50–70% very well.

• Avoid maximum strength for portraits.
  Skin can look harsh above 50%.

• Pair with Pixelate or Duotone for creative effects.

• Always export at full resolution.
  The tool preserves original image dimensions for maximum quality.

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How It Works

• Real unsharp mask algorithm
  Sharpening is produced by subtracting a Gaussian-blurred version of the image and blending the result back into the original — the same principle used by professional image editors.

• High-quality pixel pipeline
  Using getImageData() + putImageData() with { willReadFrequently: true } ensures fast per-pixel operations.

• Full-resolution processing
  Previews use scaled canvases for speed, but final exports always process the full image.

• EXIF-aware loading
  createImageBitmap({ imageOrientation: "from-image" }) ensures photos load correctly regardless of rotation metadata.

• ZIP packaging is fully local
  JSZip bundles selected images entirely on-device.

• Privacy by design
  No servers, no uploads, no tracking. Everything happens in the browser.