What is depth-of-field blur?

Depth-of-field blur simulates professional DSLR lenses by keeping your subject in sharp focus while softly blurring the background, making the subject stand out.

Can I control the blur intensity?

Yes, our interactive slider lets you adjust the blur radius from a subtle soft focus to a heavy artistic blur.

Does this tool work on mobile photos?

Yes, it is fully optimized for mobile browsers. You can take a photo on your phone, upload it, and apply the blur effect instantly.

Blur Photo Background

Create beautiful depth-of-field focal blur adjustments. Keep the target subject sharp while softening background details dynamically.

Drag & Drop Image Here

or click to browse from files (PNG, JPG, HEIC, WebP)

How to Blur Image Backgrounds Online

Apply professional depth-of-field blur effects to your photos instantly.

Depth of Field Controls

Simulate expensive camera lenses with adjustable radial and linear blur settings.

Secure Editing

All blur filters are applied locally on your device, ensuring complete privacy.

Mobile Optimized

Add portrait blur effects to your photos directly from your phone's browser.

Step-by-Step Instructions

1
Upload your image into the interactive editor.
2
Adjust the blur radius slider to control the background blur intensity.
3
Use the visual focus tools to keep your subject sharp while blurring the background, then click download.

Guide & Tutorial3 min readUpdated: June 2026By ToolsDaily Editorial

How to Simulate DSLR Portrait Blur on Smartphone Photos

Professional DSLR portrait photos look great because their large lenses create a soft background blur (bokeh) that highlights the subject. While smartphone cameras continue to improve, their small sensors often capture flat, fully focused backgrounds. Adding a subtle blur effect is an easy way to elevate your photos.

Our online background blur tool lets you simulate this effect. Upload your photo and use the blur radius slider to soften the background. The visual focus selector keeps your main subject sharp while blurring the edges, creating a professional portrait look.

Since the blur filters are applied client-side in your browser, the process is instant and secure. Your personal photos are never uploaded, ensuring complete privacy.