Blur Your Image in Three Easy Steps
Follow these simple steps to quickly add a professional blur effect to your images.
Upload Image
Click or drag your image to the designated area. The tool will automatically load your image and display it in the left preview box.
Select & Adjust
Choose your preferred blur method, then drag the slider below to preview the blur effect on the right in real-time.
Download Image
Once you are satisfied with the result, click the 'Download' button to save the processed high-definition image to your device.
How the Four Blur Methods Work
Understand the principles behind different blur algorithms to help you choose the best effect for your creation.
Box Blur
How it works:
Box blur is the most basic blur algorithm. Its principle is very simple: for each pixel in the image, it takes all the pixel colors within a surrounding "box" area, calculates their average value, and then replaces the central pixel's color with this average. The larger the "box," the stronger the blur effect.
Characteristics:
Extremely fast to compute, but the effect is relatively harsh and may produce a slight blocky appearance.
Gaussian Blur
How it works:
Gaussian blur is an upgraded version of box blur and the most commonly used blur algorithm. It also calculates the average of surrounding pixels, but instead of simply averaging them, it assigns weights based on a "Gaussian distribution" (a normal distribution shaped like a bell curve). Pixels closer to the center point have a greater weight, while those farther away have less. It's like a drop of water hitting a calm surface: the impact is greatest at the center and gradually diminishes outwards.
Characteristics:
The effect is very smooth and natural, making it the standard blur effect in image processing software like Photoshop.
Stack Blur
How it works:
Stack blur is an efficient algorithm that quickly simulates a smooth effect similar to Gaussian blur by applying a box-like blur calculation multiple times ("stacking"). You can imagine it as applying a box blur to the result of a previous box blur; repeating this a few times makes the blockiness disappear and the effect become smooth.
Characteristics:
Much faster than traditional Gaussian blur, while producing a much better effect than a simple box blur. It is ideal for scenarios requiring real-time processing.
Radial Blur
How it works:
Radial blur simulates the visual effect produced when an object rotates quickly or when a camera lens zooms rapidly. It uses a central point in the image as the origin and blurs pixels along radial lines or concentric circles emanating from the center. The color of each pixel is mixed with the colors of other pixels on its blur path.
Characteristics:
Creates a strong sense of motion and visual impact, often used to emphasize a subject or create a feeling of speed.