Blur Image

Yes. All image processing happens 100% client-side in your browser using the Canvas API. Your images are never uploaded to any server or stored anywhere.

Yes. This image blur tool is completely free with unlimited use, no watermarks, and no registration required.

Yes. Once the page loads, you can blur images without an internet connection since all processing happens in your browser.

JPG, PNG, WebP, and GIF are officially supported. Any other format your browser can decode via the <img> tag (such as AVIF on modern Chromium) will also work.

The slider maps directly to the CSS/Canvas blur radius in pixels (1-20). Values 1-5 give a subtle blur; 6-12 feel like a shallow depth of field; 15-20 are strong privacy-grade blurs that hide text and faces completely.

No. Gaussian blur discards high-frequency detail, so the original pixels cannot be recovered from the blurred PNG. Keep a copy of the original file if you might want the sharp version later.

This tool blurs the entire image uniformly. If you need to hide just a face or a licence plate, use our dedicated “Blur Face in Image” tool which supports manual region selection.

Blurring is used for privacy (hiding identifying detail), aesthetics (soft backgrounds, dreamy looks), UI design (placeholder backdrops, modals behind frosted glass), and compression pre-processing (reducing detail before aggressive JPEG encoding).

Ctrl+Enter (or Cmd+Enter on Mac) triggers “Apply Blur” without needing to click the button. Moving the slider via arrow keys also re-renders the preview live.

The download is always a PNG so the blurred output stays crisp regardless of the source format. PNG also preserves alpha for transparent source images.