Blur Background

Blur Background selectively applies a Gaussian blur effect to the background of an image while keeping the foreground subject sharp — simulating shallow depth-of-field or bokeh effects.

When to use this tool

• Creating portrait-style background blur for photos
• Drawing attention to a subject by softening the background
• Adding depth-of-field effects to smartphone photos
• Stylizing product images with a soft backdrop

How it works

Applies a multi-pass box blur or Gaussian blur kernel to the image canvas. The blur radius is configurable, and the effect can be applied globally or masked to specific regions using the brush or auto-detection.