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Image Blur Tool

Soften a photo or hide detail with an adjustable blur radius.

Blur an image

Source: No image loaded
Blurring runs on a local canvas and your photo is never uploaded.

How to use the Image Blur Tool

  1. Choose the photo you want to soften from your device.
  2. Set the blur radius in pixels with the slider.
  3. Click Download to save the blurred image as a PNG file.

Features

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Frequently Asked Questions

Common questions about the free online image blur tool.

Choose your photo, move the radius slider to set how soft the result should be, then click Download to save the blurred PNG.
No. The pixels are read and averaged on a canvas in your browser, so your image never leaves your own device.
Every pixel is replaced by the average of the pixels in a square around it. A larger radius averages a wider area and produces a softer image.
This tool blurs the whole image. To hide one region, crop or mask the area first, then blur the result and paste it back over the original.
Averaging a wide window over millions of pixels takes time. The cap keeps the preview responsive while still giving a strong softening effect.
Images wider or taller than 2400 pixels are scaled down before blurring so the browser stays fast, and the output stays smooth enough to use.
A strong blur makes details unreadable, but for anything sensitive use the pixelate tool as well, because mild blur can sometimes be reversed.
Yes. The tool is fully responsive and works in any modern browser on phones, tablets and desktop computers.
Yes. It is completely free and unlimited, with no account, no sign-up and no watermark on your downloaded image.

Last updated: October 10, 2026