Blur Image Online

What Blur Image Online does

Apply stack, Gaussian, motion, box, radial or softening blur with filter-specific controls and a downloadable browser preview.

Worked example

How the result is produced

Blur filters replace each pixel with information from neighboring pixels. Radius or kernel controls how wide that neighborhood is; direction and center settings alter which neighbors contribute.

Useful workflows

• Soften a background behind text
• Reduce distracting detail in a mockup
• Create motion or radial visual effects

Important limits

• Blur is not reliable anonymization; faces, text or identifiers may remain recoverable.
• Large radii and high-resolution images require more memory and processing time.
• Different filters with the same numeric strength do not produce equivalent results.

Frequently asked questions

Which blur should I use for a background?

Gaussian or stack blur usually gives a natural, even result.

Can blur safely redact sensitive information?

No. Use a solid, irreversible redaction workflow for confidential data and verify the exported file.

Why is the exported image larger or smaller than expected?

File size depends on dimensions, output format, quality and image detail; blur strength alone does not determine compression.