Blur Image
Upload an image and apply a Gaussian blur effect with a configurable radius. The blur radius slider lets you go from a subtle softening (1-5px) to a heavy, frosted-glass effect (20-50px). This is useful for creating background images, obscuring sensitive information in screenshots, or producing design assets with depth-of-field effects.
The blur is applied uniformly across the entire image using the browser's native CSS filter pipeline, which runs on the GPU for fast rendering. The result is exported as a PNG to preserve quality.
Everything runs in your browser — the image is never uploaded to a server.
By The Paper Room Editorial Team — Image Tools
Frequently asked questions
Can I blur only part of the image?▼
This tool applies blur to the entire image uniformly. For selective blurring (e.g., blurring a face or license plate), you'd need an image editor with masking or selection capabilities.
What blur radius should I use?▼
For subtle softening (portrait background, slight haze), try 3-8px. For obscuring text or details in screenshots, use 15-25px. For a heavy frosted-glass or bokeh effect, go above 30px. Preview the result before downloading to find the right level.
Does blurring reduce file size?▼
Sometimes slightly, because blurred images have less high-frequency detail for the compressor to encode. But the difference is usually small — if you need to reduce file size, use a dedicated compression tool instead.