Image Blur Tool — Free Online Gaussian Blur
Apply Gaussian blur to any image online. Adjust blur intensity with a slider. Supports JPG, PNG, and WebP. No upload required — 100% browser-based.
Drop an image here or click to upload
Supports JPG, PNG, WebP
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What is the Image Blur Tool?
The Image Blur tool applies Gaussian blur to any image directly in your browser. Adjust the blur radius from a subtle 1px softening to a heavy 50px blur — ideal for creating depth-of-field effects, blurring backgrounds, hiding sensitive details, or generating frosted-glass assets.
How to Blur an Image
- Upload your image by dropping it on the upload area or clicking to select
- Use the Blur Radius slider to set the intensity (1–50px)
- Compare the original and blurred previews side by side
- Click 'Download' to save the blurred image
Features
- Adjustable Gaussian blur radius (1–50px)
- Real-time side-by-side before/after preview
- Supports JPG, PNG, and WebP input
- Output maintains original format and dimensions
- 100% client-side — files never leave your device
FAQ
Can I use blur to hide sensitive information?
Light blur can be partially reversed with image processing techniques. For redacting sensitive text or faces, use a higher radius (30–50px) for better obscurity.
Does blurring change the image dimensions?
No. The output image has exactly the same width and height as the original.
How is blur applied in the browser?
We use the HTML Canvas API with the CSS filter 'blur()' function, which applies a standard Gaussian blur. The result is then exported at 92% quality.