ToolFeather

Blur an Image

Load a picture, choose a blur radius with the slider, watch the preview update, and download the softened image.

Blur Image

Drop an image here or click to choose

6px
Download PNG
Preview

🔒 Nothing you enter is sent anywhere or stored. All processing happens in your browser.

How it works

Blurring softens an image by spreading each pixel into its neighbours. This tool uses the canvas ctx.filter = 'blur(Npx)' effect, which applies a fast Gaussian-style blur at whatever radius you choose. A small radius gently softens; a large radius turns the picture into smooth washes of color.

Drag the blur radius slider and the preview redraws instantly from the original, so you never stack blur on blur — each setting is applied fresh to the pristine image. When it looks right, Download PNG saves the blurred version losslessly.

A common use is privacy: obscure a face, a license plate, a name, or an account number before sharing a screenshot. Since the whole process runs in your browser, the sensitive original never leaves your device — which matters most exactly when you are hiding something.

Examples

A screenshot with an email address → radius 12 → the address is unreadable.
A photo background → a light blur for a soft, dreamy look.
A thumbnail → a heavy blur to use as a placeholder while a full image loads.

Frequently asked questions

Can a blur be reversed to reveal what was hidden?
A strong blur destroys detail and is not practically reversible for text or faces. For maximum safety use a large radius, and crop out anything you do not want shared at all.
Does increasing the slider stack blurs?
No. Each change re-applies the blur to the original image, so the radius shown is always the total blur, not an accumulation.
Which browsers support this?
All current major browsers support the canvas blur filter. Very old browsers may ignore it and draw the image unblurred.
Does it keep transparency?
Yes. The PNG output preserves the alpha channel; edges may soften where transparent and opaque areas meet.
Is my image uploaded?
No. The blur is computed on a local canvas in your browser, so files stay on your device.