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Image Blur Tool

Apply professional blur effects to images with adjustable intensity. Choose Gaussian, Box, or Motion blur — 100% client-side processing for complete privacy.

Drag & drop an image here

or click to browse (PNG, JPEG, WebP)

Why Choose Image Blur Tool

The Calnex Image Blur Tool lets you apply professional-quality blur effects to any image directly in your browser. Choose from three blur algorithms — Gaussian Blur for smooth, natural softening; Box Blur for fast, uniform smoothing; and Motion Blur for directional streak effects. Adjust the intensity slider from 1 to 20 pixels to fine-tune the strength of the effect, preview changes in real time, and export the result as PNG, JPEG, or WebP. All processing runs 100% client-side using the HTML5 Canvas API, so your images are never uploaded to a server.

  • ✓Three blur algorithms: Gaussian, Box, and Motion blur for various creative and practical needs.
  • ✓Adjustable intensity from 1 to 20 pixels with real-time preview for precise control.
  • ✓100% private — all image processing is done locally in your browser via the Canvas API.
  • ✓One-click export to PNG (lossless), JPEG (smaller file), or WebP (best compression).
  • ✓Drag-and-drop upload and instant side-by-side before/after comparison.

How to Use

  1. 1Drag and drop your image into the upload zone, or click to browse and select a file (JPG, PNG, WebP).
  2. 2Choose the blur type from the dropdown: Gaussian Blur, Box Blur, or Motion Blur.
  3. 3Adjust the blur intensity slider from 1 (slight softening) to 20 (heavy blur).
  4. 4Preview the blurred result in real time and compare it with the original using the side-by-side view.
  5. 5Select your preferred output format (PNG, JPEG, or WebP).
  6. 6Click 'Download' to save the processed image to your device.

Frequently Asked Questions (FAQ)

What is the difference between Gaussian, Box, and Motion blur?

Gaussian Blur uses a bell-curve weighted average to produce a smooth, natural softening effect — ideal for backgrounds and portraits. Box Blur applies a simple uniform average, which is faster and creates a blockier, uniform smoothing. Motion Blur simulates directional movement by averaging pixels along a line, useful for creating speed effects or artistic streaks.

Are my images uploaded anywhere when I use this tool?

No. The Image Blur Tool processes everything locally in your browser using the HTML5 Canvas API. Your image files never leave your device, ensuring complete privacy and security.

What blur intensity should I use?

For subtle background softening or portrait skin smoothing, an intensity of 2–5 is usually ideal. To heavily blur backgrounds (bokeh effect) or obscure sensitive information, try 8–15. The maximum intensity (15–20) produces a heavy, artistic blur.

Can I blur only a part of the image?

The current version applies the blur to the entire image. For selective or region-based blurring, you can use this tool to create a blurred version and then composite it with the original in an image editor.

Which output format should I choose?

PNG is best if you need lossless quality and plan to edit the image further. JPEG produces smaller files suitable for web use and sharing. WebP offers the best compression-to-quality ratio, ideal for modern websites, though some older software might not support it.