Background Blur Tool - Manual Portrait Mode Editor

Add professional background blur to any photo. Paint to select subject, adjust blur intensity and feathering. Create bokeh effects without AI. Browser-based.

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Drop your photo here or click to browse

Portrait photos work best - person, pet, product, or any subject

Canvas - Paint Subject to Keep Sharp

Show Original

Upload a photo to start

Brush Settings

Mode

Brush Size 50px

Show Mask Overlay

Highlight painted areas

Blur Settings

Blur Intensity 25px

Edge Feathering 15px

Tips: Paint your subject first, then click Apply Blur. Use eraser for mistakes. More feathering = smoother transitions.

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Frequently Asked Questions

Paint over the areas you want to keep sharp (your subject). Everything not painted becomes blurred background. This gives you complete control over exactly which parts stay in focus, unlike AI-based tools that may miss details.

For subtle professional portraits, 10-20px works well. For dramatic bokeh effects, try 30-50px. Very high blur (60+px) creates artistic, dreamy effects. Start low and increase until you get the desired separation between subject and background.

Feathering creates a smooth transition between sharp and blurred areas. Higher feathering (20-40px) gives natural-looking edges. Lower feathering creates harder boundaries. For portraits, medium feathering usually looks most natural.

Yes! Click 'Undo Last Stroke' to remove your most recent brush stroke, or 'Clear All' to start over. You can also use the eraser mode to remove specific areas from your selection.

Use large brushes (80-150px) for quickly covering large areas like torsos. Switch to smaller brushes (10-30px) for detailed areas like hair edges, fingers, or complex outlines.

Subjects typically have complex edges (hair, clothing details) that need precise selection. Backgrounds are usually simpler. By painting what you want sharp, you focus your effort on the details that matter most.

No. All processing happens locally in your browser using the Canvas API. Your photos never leave your device. This is completely private and works offline after the page loads.

Use a smaller brush and paint carefully along hair edges. Increase feathering to 30-40px for hair areas. It's okay to slightly overlap into the background - the feathering will create a natural transition.

Yes, toggle the 'Show Original' checkbox to instantly compare your blurred result with the original photo. This helps you judge the effect and decide if you need more or less blur.

The processed image downloads as a high-quality JPEG file. The output maintains your original image resolution for professional results suitable for printing or digital use.

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