Blur Image Online — Add Gaussian & Background Blur Free

Need to blur part of an image to protect privacy or create a soft background effect? The MyPDF Blur Image tool lets you apply Gaussian blur, selective area blur, or full-image blur directly in your browser — no software to install.

How to Blur an Image

1. Upload your image (JPG, PNG, WebP, or BMP) to the blur tool.
2. Configure the blur type and intensity — choose full-image blur, select specific areas, or adjust the Gaussian radius.
3. Download your blurred image instantly in the original format.

Common Blur Use Cases

Use Case	Blur Type	Typical Radius
Hide license plates	Area/selective blur	10-20 px
Soft portrait background	Gaussian blur	5-15 px
Censor personal data	Heavy pixelate/blur	20-40 px
Dreamy photo effect	Full-image Gaussian	3-8 px

Practical Tips

• Use selective blur to keep the subject sharp while blurring the background — this mimics a DSLR bokeh effect.
• Higher radius values produce stronger blur. Start at 10 px and adjust until the content is unreadable for privacy use.
• Save as PNG if you need lossless quality after blurring; JPG will re-compress and may introduce artifacts.

Can I blur just part of an image?

Yes. The tool lets you select rectangular or freeform areas to blur while keeping the rest of the image sharp.

Is my image uploaded to a server?

All processing happens in your browser. Your images are never uploaded to or stored on any server.

How does this compare to desktop software?

Adobe Photoshop offers more advanced masking options, but for quick privacy blurs and background effects, the MyPDF tool delivers instant results without any downloads.

Related Tools

• Pixelate Image — pixelate faces and sensitive areas
• Remove Image Background — remove backgrounds entirely
• Crop Image — crop images to specific dimensions
• Resize Image — resize images for web or print