How does this online image blur tool work?

The tool uses the modern HTML5 Canvas 2D filtering API to calculate and apply pixel convolutions directly in your browser without uploading files to remote servers.

Is my uploaded picture private and secure?

Yes, 100%. All processing happens strictly in your local device memory using JavaScript. No photos or metadata are ever transmitted or saved.

Can I use this tool to censor confidential info or faces?

Yes. Setting a higher blur radius (30px–80px) thoroughly obscures identifiable faces, credit card numbers, license plates, and sensitive documents.

What image file formats can I blur?

You can upload PNG, JPEG/JPG, WebP, AVIF, GIF, BMP, and SVG files.

Does blurring reduce the resolution of my image?

No. The exported image maintains the exact original pixel width and height dimensions of your uploaded source file.

Blur Image & Background Blur

Blur photos and backgrounds online with adjustable blur radius and instant preview.

100% free
Private in browser
No signup
No watermarks

Select or Drop Image

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About Blur Image & Background Blur

The Blur Image tool allows you to easily apply smooth Gaussian or uniform box blur effects to any photo directly inside your browser. Whether you want to censor sensitive credentials, blur faces for privacy, create aesthetic blurred wallpaper backgrounds, or soften portrait depth-of-field, this tool gives you instant real-time control with zero upload delays and full client-side privacy.

How to use Blur Image & Background Blur

Upload Photo: Drag and drop your image file or click to browse (PNG, JPG, WebP, SVG supported).
Select Blur Type & Radius: Choose between smooth Gaussian blur or Box blur and slide the blur intensity from 1px to 100px.
Preview & Download: Inspect the live real-time canvas preview and click Download Image to save your high-resolution blurred photo.

Key features

Smooth Blur Sliders: Fine-tune blur intensity from subtle aesthetic softening up to complete privacy obscuration.
Multiple Blur Algorithms: Toggle between soft Gaussian optical blur and rapid uniform Box blur.
100% Client-Side Privacy: Your photos are processed entirely within your web browser canvas; files never leave your computer.
High-Res Lossless Export: Download the blurred image in crisp PNG or original format matching full image dimensions.

Frequently asked questions

How does this online image blur tool work?: The tool uses the modern HTML5 Canvas 2D filtering API to calculate and apply pixel convolutions directly in your browser without uploading files to remote servers.
Is my uploaded picture private and secure?: Yes, 100%. All processing happens strictly in your local device memory using JavaScript. No photos or metadata are ever transmitted or saved.
Can I use this tool to censor confidential info or faces?: Yes. Setting a higher blur radius (30px–80px) thoroughly obscures identifiable faces, credit card numbers, license plates, and sensitive documents.
What image file formats can I blur?: You can upload PNG, JPEG/JPG, WebP, AVIF, GIF, BMP, and SVG files.
Does blurring reduce the resolution of my image?: No. The exported image maintains the exact original pixel width and height dimensions of your uploaded source file.