Blur Image
Upload an image, adjust the blur radius, download the result.
A free online tool to blur an image — drop in a photo, drag the radius slider, and watch the preview update live. No signup, everything runs in your browser.
What does blurring an image do?
Blurring softens an image by spreading each pixel's color into its neighbors, smoothing out sharp edges and fine detail. It's used to de-emphasize a background behind foreground text, create a soft placeholder while a full-resolution image loads, soften a busy photo, or produce an abstract, out-of-focus look.
Choosing a blur radius
A small radius (2-8px) gives a subtle softening — useful for gently reducing noise or grain without losing the subject. A medium radius (10-25px) is typical for background blur behind overlaid text. A large radius (30px+) produces a heavy, abstract blur where the original subject becomes hard to identify — useful for backgrounds or loading placeholders where the exact content doesn't matter.
Blurring a whole image vs one area
This tool applies the blur uniformly across the entire image. If you need to obscure just one specific region — like a face or a license plate — while leaving the rest sharp, use the Pixelate Image tool instead, which lets you drag-select the area to affect.
Common uses
Blurred background images behind hero text, low-quality image placeholders (LQIP) shown while a full photo loads, softened photo backgrounds for a portrait effect, and simple privacy blurring for non-sensitive content.
Frequently asked questions
How do I blur an image?
Upload or drag in an image, then drag the Blur radius slider — the preview updates live. Click Download PNG when you're happy with the result.
What is the blur radius?
The blur radius controls how far each pixel's color spreads into its neighbors, in pixels. A small radius gives a subtle softening; a large radius produces a heavy, abstract blur.
Can I blur just part of an image?
This tool blurs the whole image uniformly. For blurring or hiding just one region — a face, a license plate — use the Pixelate Image tool instead, which supports selecting a specific area.
Is my image uploaded anywhere?
No. The blur is rendered locally in your browser using a canvas — your image never leaves your device, and nothing is stored on a server.
Related tools: Pixelate Image · Grayscale Image · Image Fade Effect Generator
