About this tool
What does Blur Background do?
Blur Background creates a portrait-style depth effect by separating the main person from the scene and applying blur behind them. When supported, the tool loads a browser-based MediaPipe segmentation model. A manual focus fallback remains available if the model cannot load or the subject is not a person.
Browser-based person segmentation
Adjustable background blur
Edge softness control
Manual elliptical focus fallback
Step-by-step guide
How to use Blur Background
- Upload a portrait with a clearly visible subject.
- Run automatic segmentation or choose manual focus mode.
- Adjust blur strength and edge softness.
- Preview the cutout edges and download the portrait.
Understand the result
How to read and refine the output
Strong blur mimics a shallow depth of field but can expose imperfect mask edges. Edge softness blends the transition between subject and background. Hair, transparent fabric and objects held away from the body are the most difficult areas for segmentation.
Practical advice
Tips for better results
- Use a well-lit portrait with clear subject separation.
- Avoid backgrounds with colors identical to clothing.
- Use moderate blur for natural results.
- Inspect hair and shoulders before downloading.
Best-fit tasks
When to use Blur Background
- Making a portrait subject stand out
- Reducing distracting background detail
- Creating a shallow-depth-of-field look for social images
Choose carefully
When another method may be better
This effect is not a reliable privacy redaction method. A blurred background may still reveal shapes, text or location clues; use explicit masking for sensitive information.
Practical example
Example workflow
Use moderate blur around hair and shoulders, then inspect edges at 100% zoom for halos before downloading.
Important limitations
What this tool cannot guarantee
Automatic mode is optimized for people rather than arbitrary products or animals and requires loading a model file from a CDN. It may fail offline. The manual fallback uses an elliptical focus region and is not true semantic segmentation.
Common questions
Blur Background FAQs
Does automatic blur use AI?
Yes. Automatic mode uses a browser-loaded person-segmentation model when available.
Is the photo uploaded to the model provider?
No. The model files download to the browser; image processing stays on the device.
Why is part of my hair blurred?
Fine hair can be difficult for segmentation. Reduce blur or increase edge softness.
Can I blur a product background?
Use manual focus mode for non-person subjects.
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