What is the maximum blur intensity?

You can scale blur radius up to 50px or higher for complete visual obfuscation.

Are my sensitive screenshots uploaded anywhere?

No. All blurring is executed directly inside your local browser memory.

How does Gaussian blur differ from box blur?

Gaussian blur uses a bell-shaped bell curve matrix that creates a smoother, more organic optical blur compared to simpler box blur filters.

Can I blur only a specific portion of an image?

You can crop the sensitive region in Image Playground Studio, blur it, and composite it over your photo.

Blur Image

Apply adjustable blur effects to photos.

100% In-Browser

All-In-One StudioBulk + Single

Want to process images in bulk, add compressions, conversions, filters & background removal all in one flow?

Try Image Playground

100% In-Browser PrivacyLocal

Your files and data are processed locally and never leave your device.

Upload image to edit

Crop, rotate, adjust filters, add watermarks, and analyze colors locally

Max size: 150MB •100% In-Browser

What is Blur Image?

Blur Image applies adjustable Gaussian blur filters to photographs and graphics. Whether you need to obscure sensitive personal data in a screenshot or create an artistic, soft-focus background for design layouts, this tool processes pixels locally in real time.

Zero-Server Client-Side Guarantee

Unlike legacy online utilities that upload sensitive media and documents to remote cloud storage, Shadow Toolkit executes this entire operation directly within your browser's local runtime. Your raw data never crosses the network.

Key Capabilities

Adjustable Gaussian blur radius slider from subtle softening to heavy diffusion
Real-time visual rendering powered by hardware-accelerated Canvas filters
Preserves original image resolution and aspect ratio
Ideal for data redaction and aesthetic background wallpaper creation
100% private in-browser processing with zero server uploads

Common Use Cases

1Obscuring confidential details (names, emails, passwords) in screenshots before public sharing

2Creating soft, out-of-focus background wallpapers for UI presentation mockups

3Softening harsh background elements to keep focus on foreground subjects

4Optimizing raster graphics and illustrations for high-performance responsive web design and mobile apps

How to use Blur Image

Upload Image

Select the photo you want to blur.

Adjust Blur Radius

Use the slider to dial in the perfect intensity of Gaussian blur.

Download Blurred Image

Click 'Download' to save your modified image.

Verify & Save Output

Inspect the processed Blur Image preview on the canvas and download the final image asset directly to your device.

Frequently Asked Questions

No. When Gaussian blur is applied at a high radius, high-frequency pixel information is permanently destroyed, making mathematical reversal impossible.