Blur Image Background Online Free

Blur the background of any portrait while keeping the subject sharp, directly in your browser. AI-powered selfie segmentation runs locally with AI engine, so your photo never leaves your device. Switch between blur, grayscale, and solid color backgrounds with adjustable strength and edge softness.

Blur Image Background with AI

Drag & drop or click to select - subject stays sharp, background gets blurred

100% in-browser AI - your image is never uploaded.

How to Blur the Background of an Image

1

Upload Your Photo

Drag and drop or choose any photo to blur the background of.

2

Pick Your Effect

Pick a blur strength and watch the subject stay sharp.

3

Download

Click Download and save the photo with a blurred background as PNG.

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Portrait-Style Background Blur Without a DSLR

Studio-style background blur used to need a fast lens. Now any phone photo can fake the effect: the subject stays sharp, the background fades smoothly, and the result looks editorial.

Used by ecommerce sellers polishing product shots, real-estate agents enhancing listings, and content creators upgrading older photos.

Why Use Our AI Background Blur Tool?

AI Selfie Segmentation

With AI engine Selfie Segmentation, the same on-device model Google uses in Meet and Duo for video background blur. The model loads from a CDN, runs entirely in your browser via fast in-browser engine, and produces a precise per-pixel alpha mask of the subject in well under a second on most devices.

Three Background Modes

Switch between three effects with one click, Blur (Gaussian blur with adjustable strength up to 60 px), Gray (background desaturated to black & white while subject stays in color), and Color (solid color picker for clean studio-style backgrounds). All effects render live as you adjust the controls.

Adjustable Edge Softness

AI segmentation masks can sometimes look hard-edged on hair and clothing edges. The Edge Softness slider applies a feather (Gaussian blur) to the alpha mask itself before compositing, values from 0 px (sharp) to 20 px (very soft) let you balance crisp subject edges against natural-looking transitions.

Private, No Upload

The AI engine model runs entirely client-side via fast in-browser engine and the HTML5 Canvas API. Your image is loaded into a canvas on your device, segmented locally, composited locally, and downloaded locally, no file is sent to any server, no account is needed, and nothing is stored.

Frequently Asked Questions

Common questions about AI background blur.

How accurate is the subject detection?
AI engine Selfie Segmentation is highly accurate on portraits where the subject is clearly visible in the frame, typically what you would shoot for a video call. It can struggle with multiple overlapping people, very busy backgrounds, or fully obscured/profile faces. The Edge Softness slider helps mask any minor boundary errors with a natural feathered transition.
Does the AI model upload my photo?
No. The AI engine Selfie Segmentation model is downloaded once from a public CDN to your browser (it is the same model file Google ships with their JavaScript SDK). Once downloaded, it runs entirely on your device using fast in-browser engine. Your photo never leaves your device, and the model file is cached so subsequent uses are instant.
Why does the edge sometimes look weird around hair?
Hair is the hardest case for any segmentation model, fine strands and stray hairs blend into the background. The model produces a soft probabilistic mask but cannot resolve every individual hair. Increase the Edge Softness slider to a value between 4 and 10 to soften the boundary; this typically hides most hard-edge artifacts without making the subject look detached.
Can I use this for non-portrait images?
The model is specifically trained for "selfie segmentation", humans in portrait/upper-body framing. It can sometimes work on full-body shots and group photos but accuracy drops. For products or objects on plain backgrounds, dedicated background-removal tools (with different models) work better.
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