Blur Background Online
Blur photo backgrounds like portrait mode, right in your browser. AI separates your subject from the background, then applies a smooth blur effect while keeping your subject perfectly sharp.
Drop Your Photo Here or Click to Browse
Works best with portraits, product photos, and images with clear subjects
How It Works
1. Upload Your Photo
Drop any photo — portraits, selfies, product shots, or any image where you want a blurred background effect
2. AI Separates Subject
IMG.LY neural network precisely identifies your subject and separates it from the background — like a smart selection tool
3. Blur & Download
Adjust blur intensity and edge feathering. The background gets a smooth blur while your subject stays razor sharp. Download as PNG
Why Blur Backgrounds Here
🌫️ Portrait Mode Effect
Get the same beautiful background blur effect as smartphone portrait mode — but with full control over the blur intensity. Works on any photo, not just portraits.
🎯 AI Subject Detection
No manual selection or masking needed. The AI automatically identifies your subject and keeps it perfectly sharp while only the background gets blurred.
✨ Adjustable Blur & Feathering
Fine-tune the blur radius for subtle depth-of-field or dramatic bokeh. Edge feathering softens the transition between subject and background for a natural look.
🔄 Two Blur Modes
Background Only mode blurs just the background while keeping the subject sharp. Entire Image mode applies the blur to the whole photo for a dreamy, soft-focus look.
🔍 Before/After Compare
Use the interactive slider to compare the original image with the blurred result side by side. Make sure the effect looks exactly right before downloading.
🔒 100% Private
All processing happens entirely in your browser. Your images never leave your device — no upload to servers, no storage, no privacy concerns whatsoever.
Frequently Asked Questions
How does the background blur work?
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Our AI first identifies and separates your subject from the background. Then, instead of removing the background, it applies a smooth blur effect to just the background region. Your subject stays perfectly sharp while the background gets that beautiful portrait-mode look. You can also choose "Entire Image" mode to blur the whole photo for a dreamy, soft-focus effect.
What's edge feathering?
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Edge feathering controls how smoothly the blurred background transitions into your sharp subject. A feathering of 0px creates a sharp, hard edge — which can look artificial if the AI mask isn't perfect. Increasing feathering to 2-5px softens this transition, creating a more natural and professional look. For portraits, we recommend 2-3px feathering for the most natural result.
Can I blur just the background and keep the subject sharp?
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Yes — that's exactly what "Background Only" mode does. The AI automatically separates your subject from the background, then applies the blur effect exclusively to the background area while leaving the subject untouched. This is perfect for portraits, product photos, and any image where you want to emphasize the main subject by making the background less distracting.
What blur radius should I use?
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For a subtle depth-of-field effect (like f/2.8 on a full-frame camera), try 5-10px blur. For a strong bokeh effect, use 20-30px. For extreme dreamy effects, 40-50px. Start with 10px and adjust up or down until it looks natural. The right setting depends on your image resolution and how much you want to de-emphasize the background.
Is this better than phone portrait mode?
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Phone portrait mode is great in-camera, but you can't adjust it after the fact. Our tool gives you full control over blur intensity and edge feathering. Plus it works on any photo — even ones not taken in portrait mode. You can apply professional background blur to old photos, downloaded images, or product shots where you want to reduce background distractions.
What's the difference between Background Only and Entire Image?
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Background Only keeps your subject perfectly sharp while applying blur exclusively to the background — ideal for portraits and product photos. Entire Image blurs the entire photo uniformly, creating a dreamy, soft-focus look that's great for artistic effects, dream sequences, or when you want to reduce overall image sharpness.