Blur Image
Apply an adjustable blur to an image.
🔒 Runs entirely in your browser — your image is never uploaded.
Drag & drop an image here, or click to browse
How Blur Image works
How does the blur effect get applied?
It sets the canvas context's filter property to a CSS-style blur(Npx) value before calling drawImage(), so the browser's own compositor applies a Gaussian blur as it paints the image onto the canvas — the same filter used for CSS blur effects on the web. The radius slider runs from 0 to 30 pixels, and the filter is reset to none immediately after drawing so it doesn't leak into anything drawn afterward.
What's a real reason to blur a whole image like this?
It's handy for creating a soft background image behind text or a UI mockup, or for quickly obscuring a busy or distracting background in a photo. It blurs the entire image uniformly rather than a selected region, so it's not a substitute for redacting a specific detail like a face or license plate.
Does blurring actually remove the underlying detail?
No — this is a visual filter applied at render time, not a destructive pixel-scrambling redaction, so treat it as cosmetic rather than a privacy tool for hiding sensitive information in an image you plan to share. The output format matches whatever you uploaded (PNG stays PNG, JPG stays JPG) with no separate quality control.