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Image Blur Tool

Blur a whole photo, or just the part you drag over.

Image Tools Reviews Free · no sign-up

Drop an image here, or click to choose one

JPEG, PNG, WebP, GIF or SVG · processed on your device, never uploaded

Quick Tool Overview

The Image Blur Tool blurs a whole picture or just a region you drag over, using a real separable Gaussian rather than the cheap box blur most web tools use. For redaction it is explicit about the limits: a light blur can be computationally reversed, so it tells you when the radius is too small to be relied on.

What it does
Blurs an image or a selected part of it
You give it
A photo or screenshot and a radius
You get back
The blurred image, baked in
Best for
Softening backgrounds and hiding private detail
Image Tools Free, unlimited use No sign-up Runs in your browser

About the Image Blur Tool

Blurring has two quite different uses. One is aesthetic — softening a background so the subject stands out, or producing a backdrop for text. The other is redaction: hiding a face, a licence plate, an address or a name in a screenshot.

Both are here, with a real separable Gaussian blur rather than the cheap box blur most web tools use, so the result is smooth instead of blocky. For redaction it is worth being careful: a light blur can sometimes be computationally reversed, so use a large radius or switch to pixelation with big blocks when the thing being hidden actually matters.

Key features of the Image Blur Tool

Real Gaussian blur

Two separable passes with a proper bell-curve kernel, so the result is smooth rather than boxy.

Blur a region only

Drag a box over a face, a name or a plate and leave the rest of the image untouched.

Honest about redaction

The page says plainly that a weak blur is reversible and points you at pixelation when it actually matters.

Alpha blurred too

Transparency is blurred along with colour, so cut-out images keep soft edges instead of hard ones.

Nothing uploaded

Screenshots being redacted are exactly the files that should not be sent anywhere, and here none are.

How to use the Image Blur Tool

  1. 1

    Load the image

    A photo or a screenshot.

  2. 2

    Choose whole or region

    Blur everything, or drag a box over just the part that needs hiding.

  3. 3

    Set the radius

    A few pixels softens; 20 or more genuinely obscures.

  4. 4

    Download

    The blur is baked into the pixels, so it cannot be turned off later.

Frequently asked questions

Only at a large radius. A light blur is a reversible mathematical operation and text has been recovered from weak blurs before. For anything that matters, use a heavy radius or solid pixelation.

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