AI Background Blur Online
Apply realistic DSLR portrait bokeh and background defocus to any photo instantly without uploading to servers.
About AI Background Blur Tool Online Free
SizeSnap AI Background Blur transforms standard everyday photos into cinematic studio portraits. Using depth-aware semantic segmentation, the tool detects the subject's silhouette and softens distracting background clutter (busy streets, crowded rooms, messy offices) with natural optical blur.
How to Use AI Background Blur Tool (Step-by-Step)
- Upload Image: Drag or select any portrait, selfie, or product photo.
- Automatic Depth Estimation: AI segments the foreground subject from the background plane.
- Adjust Blur Strength: Fine-tune the blur slider from a subtle professional defocus to deep bokeh.
- Download HD Image: Click Download to export your studio-style portrait photo with zero watermarks.
Key Features & Advantages
Natural Gaussian & Bokeh Diffusion
Simulates genuine photographic camera lenses (f/1.8 – f/2.8) rather than artificial radial blurs.
Precise Subject Edge Separation
Preserves sharp hair, shoulders, and glasses frames while cleanly blurring the surrounding environment.
Adjustable Blur Radius
Custom slider lets you dial in the exact depth of field required for your profile or portfolio.
Zero Cloud Storage
Full processing runs in local browser memory for 100% data confidentiality.
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Frequently Asked Questions
How do I blur the background of a photo on mobile or PC?
Upload your photo into SizeSnap AI Blur Background. The on-device portrait segmentation model automatically identifies the main subject and applies a smooth optical lens blur to the background. Adjust the blur slider to your taste and download.
Can I control the intensity of the background blur?
Yes! Use the blur slider to dial in anything from a subtle f/2.8 lens blur to a creamy f/1.4 dramatic bokeh effect.
Does this tool work on photos taken without portrait mode?
Yes! Even if your original photo was captured on a standard single-lens phone camera with everything in focus, SizeSnap generates depth maps to create realistic optical blur.
Are my personal images uploaded to any server?
No. The AI vision model runs 100% locally in your web browser. Your photos are never uploaded or saved to remote databases.