Gaussian Blur in Your Browser

A Gaussian blur is the smooth, natural-looking blur used across photo editing — softer and cleaner than a basic box blur. This tool applies an adjustable Gaussian blur to your whole image.

Before

Blurred

The effect runs in your browser, so your photo is never uploaded.

How to use Gaussian Blur

Using Gaussian Blur takes only a few seconds and just four simple steps — no sign-up, no software, and nothing to learn:

1. Upload a photo: Add the image to blur.
2. Set the radius: Slide to control how strong the blur is.
3. Preview: See the smooth blur update live.
4. Download: Save the blurred image.

What you can do with Gaussian Blur

Gaussian Blur is built to do one job well, and gives you everything you need to get it exactly right:

The clean, classic blur

Gaussian blur is the standard for soft backgrounds, frosted effects, and gentle smoothing because it looks natural. This tool gives you that exact effect with a single slider, all on your device.

Whether you need it once or every day, Gaussian Blur keeps the process quick and predictable. Because it focuses on a single task, there are no crowded menus to wade through — you open the page, set what you need, and get your result. That simplicity is exactly why a dedicated image tool beats a heavyweight editor for a job like this.

Everything runs in your browser

Unlike most online tools, Gaussian Blur never uploads your image to a server. The moment you choose a file, it is processed right here in your web browser using your own device's power. Nothing is sent over the internet, nothing is stored, and nothing is shared with anyone.

That gives you two real advantages. First, it is private: sensitive documents, ID photos and personal files never leave your computer or phone. Second, it is fast — there is no slow upload or download round-trip, so even large files are handled almost instantly. And it is completely free, with no watermark added to your result and no account required.

Tips for the best results

• Start from the highest-quality original you have — the better the input, the better the result from Gaussian Blur.
• Check the exact requirement — size, dimensions, or format — before you begin, so you only need to do it once.
• Smooth, even blur: The natural Gaussian look used in real editors.
• Adjustable radius: From a gentle softening to a heavy blur.
• Everything is repeatable — if the result isn't quite right, just adjust the settings and run it again. Nothing is uploaded, so you can try as many times as you like.

Frequently asked questions

Ready to start? Scroll back to the top, drop your image into Gaussian Blur, and download the finished file in seconds — free, private, and right inside your browser.