Blur Image Tool

Apply blur effects to images online for free.

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Three blur algorithms do different jobs: Gaussian for a natural, photographic-looking softness (backgrounds, privacy redaction), Box for a faster, more mechanical blur, and Motion for a directional streak that suggests movement. Picking the wrong one is the most common mistake — Motion blur on a face doesn't hide it the way Gaussian does.

Blur types compared

  • Gaussian: Soft, natural falloff. Best default for backgrounds and hiding faces/details.
  • Box: Faster to render, slightly more blocky at high strength — useful for quick previews or stylized looks.
  • Motion: Streaks pixels in one direction to simulate movement — a creative effect, not a privacy tool.

How to blur an image

  1. Upload: Drag and drop a JPG, PNG, or WebP file.
  2. Pick a type: Gaussian, Box, or Motion.
  3. Set intensity: Adjust the slider — higher for stronger privacy redaction, lower for a subtle depth-of-field look.
  4. Download: Save the result.

Frequently Asked Questions

What's the difference between Gaussian, Box, and Motion blur?

Gaussian blur gives a soft, natural falloff and is the best default for backgrounds or privacy. Box blur is faster to compute and looks slightly more mechanical/blocky at high strength. Motion blur streaks pixels in one direction, mimicking camera or subject movement — a creative effect rather than a privacy tool.

Is blurring reliable for hiding sensitive information like faces or license plates?

For casual sharing, yes. But be aware: strong enough blur is generally safe, while light blur can sometimes be partially reversed with deblurring/AI tools. For genuinely sensitive redaction (legal, medical), use a solid black box instead of blur.

Does blurring reduce the image resolution?

No. Blur is a pixel filter, not a resize — the output keeps the same dimensions as the original.

Is it safe to use this browser-based tool?

Yes. Processing happens locally in your browser — images are never uploaded to a server.