Image Blur
Image blur tool online. Apply blur or pixelate effects to images. Preview in real-time, then download—free image privacy tool.
Drag & drop an image
or click to browse • Max 50MB
Features
- Adjustable blur intensity
- Gaussian blur algorithm
- Real-time preview
- Full image or selective blur
- Privacy protection for sensitive content
- Instant processing
Common Use Cases
- Blur faces for privacy
- Hide sensitive information in screenshots
- Create depth-of-field effects
- Background blur for product photos
- Anonymize private data in images
Image Blur Effects
Image blurring reduces detail and sharpness by averaging neighboring pixels. It's used for privacy, artistic effects, and drawing attention to specific subjects.
Blur types:
- Gaussian blur - Smooth, natural-looking blur (most common)
- Motion blur - Directional blur simulating movement
- Box blur - Simple averaging, faster but less natural
- Radial blur - Blur radiating from a center point
Blur intensity: Measured in pixels (radius). Higher values create stronger blur:
- 1-3px - Subtle softening
- 5-10px - Moderate blur for backgrounds
- 15-30px - Heavy blur for privacy/security
- 50+px - Extreme blur, complete obscuration
Privacy use: Blur is effective for hiding faces, license plates, addresses, or sensitive documents. For security-critical data, consider complete redaction instead of blurring.
Examples
Original: Group photo
Blur: 20px Gaussian on faces
Result: Faces obscured, rest of image clearOriginal: Product photo
Blur: 15px on background only
Result: Subject stands out with blurred backgroundOriginal: Screenshot with personal info
Blur: 25px on private sections
Result: Shareable screenshot with privacy protectedFrequently Asked Questions
Generally no, but sophisticated techniques can sometimes recover partial information from light blurs. For high-security needs, use solid redaction (black boxes) instead of blur.
Use at least 15-20px for faces and 25-30px for text/sensitive data. Test by zooming in—if you can still recognize details, increase the blur radius.
Sometimes! Blurred areas have less detail, which can compress better (especially JPEG). However, the file size reduction is minor. Use compression tools for meaningful size reduction.
Yes! Select specific areas to blur while keeping the rest sharp. This is useful for backgrounds, faces, or sensitive information while maintaining overall image clarity.
For typical needs, yes. Gaussian blur is hard to reverse. For maximum security (legal documents, passwords), use pixelation or solid black boxes instead.