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Blur Effect

Apply Gaussian blur effect

Upload Image

Settings

Output

Upload an image and click "Process Image"

Complete Guide to Blur Effects

What is Gaussian Blur?

Gaussian blur applies a smoothing effect to images using a mathematical function that creates natural-looking blur. This versatile filter softens details, creates depth of field effects, reduces noise, and adds artistic touches to your photos. Named after mathematician Carl Friedrich Gauss, it's the most commonly used blur algorithm in image processing.

How to Use the Blur Tool

  1. Upload Your Image: Select any image file from your device
  2. Set Blur Strength: Adjust sigma value (0.5-10) to control blur intensity
  3. Preview Effect: See blur applied in real-time
  4. Fine-tune: Adjust strength for desired effect
  5. Choose Format: Select output format (JPEG, PNG, WebP, GIF)
  6. Process: Click "Process Image" to apply the blur
  7. Download: Save your blurred image

Understanding Blur Strength (Sigma)

Low (0.5-2)

Subtle blur, slight softening. Perfect for noise reduction and gentle skin smoothing.

Medium (2-5)

Noticeable blur, good for backgrounds. Ideal for creating depth of field effects.

High (5-10)

Strong blur, dramatic effects. Best for privacy protection and artistic backgrounds.

Common Use Cases

  • Background Blur: Create depth of field effects to make subjects stand out
  • Privacy Protection: Obscure sensitive information, faces, or license plates
  • Noise Reduction: Smooth out image noise and grain
  • Artistic Effects: Create dreamy, soft-focus looks
  • Portrait Enhancement: Soften skin and create professional bokeh effects
  • Motion Blur Simulation: Create sense of movement
  • Thumbnail Backgrounds: Create subtle, non-distracting backgrounds

Best Practices

  • Start Small: Begin with low sigma values and increase gradually
  • Purpose-Driven: Match blur strength to intended use
  • Format Choice: PNG preserves quality better than JPEG for blurred images
  • Selective Application: Consider which areas need blur
  • Preview Multiple Strengths: Try different values before deciding
  • Combine Effects: Use with other filters for creative results
  • Original Backup: Keep unblurred version for flexibility

Technical Details

Our blur tool uses the Gaussian blur algorithm, which applies a weighted average to each pixel based on surrounding pixels. The sigma value controls the standard deviation of the Gaussian function, determining how far the blur extends. Higher sigma values create more pronounced blur but require more processing time.

Privacy & Security

Your images are processed securely and never stored on our servers. All blur operations happen in real-time, and your original files remain private on your device.