How to apply Gaussian blur to an image?

Select your file and set the blur radius — larger values produce stronger, smoother softening.

What is Gaussian blur used for?

Softening images, creating depth-of-field effects, blurring backgrounds, or reducing noise before edge detection.

Is this the same as Photoshop's Gaussian Blur filter?

Yes — it applies the same algorithm. In Photoshop it is under Filter > Blur > Gaussian Blur. This tool runs the same blur free in your browser with no file upload.

What file formats can I export?

You can export as PNG, JPEG, WebP, TIFF, BMP, or HEIC.

Is this tool free to use?

Yes — completely free, no account needed. Your images are processed entirely in your browser and never uploaded to a server. Downloads have no watermarks.

← Online Image Blur Tools

Blur Image Online Gaussian Blur

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What you can expect

Apply Gaussian blur to images in your browser. Soften details, create depth effects, or prepare backgrounds quickly and for free.

Related tools

More BrushCue tools that fit this workflow.

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Box Blur

This online Box Blur tool applies a simple averaging filter to soften an image and reduce noise. It is fast and predictable, making it useful for quick previews, testing, or educational purposes. Under normal circumstances, use the Gaussian Blur tool instead for smoother, more natural-looking results.

Median Filter

Runs a median filter over the composition. This will accumulate the R, G and B components of your image and then calculate the median of each component. Valid range for the kernel size is between 1 and 5. Use this tool to remove noise from an image.

Zoom Blur

Zoom Blur simulates the effect of a camera zooming during exposure, creating streaks that radiate outward from a specified center point. The center remains relatively sharp while surrounding areas blur along radial lines. The strength parameter controls how pronounced the motion and streaking appear.

Blur Background Around People

This tool uses AI to extract the person in your image. Then, will apply a blur the background while keeping the people sharp.

Sharpen

Sharpen your images instantly with this browser-based sharpening tool. Enhance edges, boost clarity, and bring out fine details to make photos look crisp and focused. Adjust the strength to control how subtle or intense the sharpening effect appears, whether you’re refining portraits, improving product shots, or restoring slightly soft images—all without leaving your browser.

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Online Image Blur Tools

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Frequently asked questions

How to apply Gaussian blur to an image?: Select your file and set the blur radius — larger values produce stronger, smoother softening.
What is Gaussian blur used for?: Softening images, creating depth-of-field effects, blurring backgrounds, or reducing noise before edge detection.
Is this the same as Photoshop's Gaussian Blur filter?: Yes — it applies the same algorithm. In Photoshop it is under Filter > Blur > Gaussian Blur. This tool runs the same blur free in your browser with no file upload.
What file formats can I export?: You can export as PNG, JPEG, WebP, TIFF, BMP, or HEIC.
Is this tool free to use?: Yes — completely free, no account needed. Your images are processed entirely in your browser and never uploaded to a server. Downloads have no watermarks.

For developers

Use Gaussian Blur from Python

Open the Jupyter notebook example to see how to run this tool from the BrushCue Python API, inspect the processing steps, and adapt the workflow for scripts or batch image jobs.

View Python notebook

Build your own

Blur Image Online Gaussian Blur

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Use Gaussian Blur from Python

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