Blur Image Online — Free Gaussian Blur Tool
Apply professional Gaussian blur to your images with NanoImage's free online tool. Adjust the blur radius from subtle softening to heavy blur to achieve your desired effect. Perfect for creating soft backgrounds, obscuring sensitive information, adding depth-of-field effects, or preparing images for use as wallpapers and backgrounds. The blur is applied in real-time so you can see exactly how your image will look as you adjust the intensity. All processing happens locally in your browser — no uploads, no servers, complete privacy. Great for privacy protection, design work, and creative photography effects.
Drag & drop your image here, or click to browse
Supports JPG, PNG, WebP, GIF, BMP
How to Use
- 1
Upload your image by dragging it into the upload area or clicking to browse.
- 2
Adjust the blur radius slider (1-20px) to control the blur intensity.
- 3
Preview the blurred result and click "Download" to save.
Frequently Asked Questions
What type of blur is applied?
NanoImage uses Gaussian blur, which produces a natural, smooth blurring effect. It's the same algorithm used in professional photo editing software.
Can I blur only part of the image?
The current tool applies blur to the entire image. For selective blur (e.g., blurring a face or background only), stay tuned for future updates.
What blur radius should I use?
For subtle softening, try 1-3px. For moderate blur, 5-10px works well. For heavy blur or privacy purposes, use 15-20px.
Is the blur applied to the entire image?
Yes, the current tool applies Gaussian blur uniformly across the entire image. This is ideal for creating backgrounds, privacy protection, and artistic effects. Selective area blur is planned for a future update.