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Blur Image

Image

Free online Blur Image tool to easily add Gaussian blur effects to photos. Adjust blur strength, preview results, and download your blurred images instantly.

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INPUT

Auto Process

OUTPUT

Client Side

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Guide

What is Blur Image Tool?

Blur Image Tool is a free online utility that lets you apply blur effects to your images. This tool uses Gaussian blur algorithm to soften and reduce image detail, creating smooth, professional-looking results without requiring specialized software.

Key Features

Feature	Description
Multiple Image Support	Upload up to 10 images (max 10MB each)
Multiple Blur Types	Choose from Gaussian, Box, Stack, Motion, Zoom, Radial, Rotate, and Soften
Adjustable Blur Strength	Fine-tune the blur intensity from subtle to strong
Side-by-Side Preview	Compare original and blurred images before downloading
Batch Processing	Apply the same blur settings to multiple images at once
Client-Side Processing	Your images never leave your device for better privacy

Use Cases

Blur backgrounds to create depth of field effects
Obscure sensitive information in screenshots
Create focus areas by blurring distracting elements
Soften product photography for professional online listings
Create background images for web design and presentations

How to Use

Click “Browse” or drag and drop up to 10 images
Select blur type from the dropdown menu (8 different options available)
Adjust the blur strength percentage using the slider
Preview the results in real-time
Click “Download All” to save your blurred images

Blur Types Explained

The tool offers several blur algorithms, each creating distinct visual effects:

Gaussian Blur: Creates smooth, natural-looking blur based on the bell curve distribution
Box Blur: Simpler algorithm that averages nearby pixels for a more uniform effect
Stack Blur: Fast approximation of Gaussian blur with good quality results
Motion Blur: Creates a directional streaking effect simulating movement
Zoom Blur: Creates a radial blur that emanates from the center point
Radial Blur: Creates circular blurring around a specified point
Rotate Blur: Produces a spinning effect around the center
Soften Blur: Gentle blur that maintains more detail than other methods

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 FAQ

How does the Gaussian blur effect work?

Gaussian blur works by applying a mathematical function that spreads each pixel's value across neighboring pixels, creating a smooth transition effect. The algorithm uses a bell-shaped curve (Gaussian distribution) to determine how much each nearby pixel contributes to the blur, resulting in natural-looking softening.
When should I use image blurring?

Blurring is useful for creating depth in photos by softening backgrounds, protecting sensitive information in screenshots, reducing noise in low-quality images, creating focus on specific elements, and generating abstract effects for artistic purposes or backgrounds.
How strong should I set the blur strength?

The ideal blur strength depends on your purpose. For subtle background softening, 5-15% is usually sufficient. To completely obscure text or details, you may need 25-50%. For abstract artistic effects, higher settings of 60-100% might be appropriate. Always preview the results and adjust accordingly.
Will blurring reduce my image file size?

Blurring can sometimes reduce file size, especially in formats like JPG, as it removes fine details and creates areas of similar color that compress more efficiently. However, this isn't guaranteed and depends on the original image content and file format.
Is it possible to unblur an image once it's been blurred?

No, blurring permanently removes detail information from the image, and this process cannot be reversed. Always keep a copy of your original image before applying blur effects.
Does image blurring happen on my computer or on your servers?

All processing happens directly in your browser on your own device. Your images are never uploaded to our servers, ensuring complete privacy and security of your content.