What is Gaussian blur used for?

Gaussian blur is commonly used to: hide sensitive information (faces, ID numbers, addresses), create artistic soft-focus effects, simulate depth of field (background blur), and reduce image noise.

How much blur should I apply?

For light softening: 2-5px. For background blur effect: 8-15px. For heavy privacy protection: 20-30px. Use the intensity slider to preview different levels before downloading.

Image Blur Tool — Blur Photos Online Free

Blur any image online instantly with adjustable intensity. Perfect for protecting privacy by hiding faces, ID numbers, or sensitive information in photos. Also great for creating artistic soft-focus effects and background blur. Control blur strength from subtle (2px) to heavy (30px) using the slider. All processing happens in your browser — your images are never uploaded anywhere.

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Gaussian Blur applied instantly in your browser

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Frequently Asked Questions

Common questions about using this tool — answered.

Currently this tool applies blur to the entire image for simplicity. For partial blur (hide sensitive information in one corner), you can crop that section first, blur it, and then combine manually.