Blur Image
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or select from disk
Encrypted transfer· Real-time processing· Auto-delete after processing
About Blur Image
Apply Gaussian blur effects to images online for free. Blur photos to hide sensitive information, create artistic depth-of-field effects, or build overlays. Our blur tool uses Sharp's Gaussian blur algorithm, which produces natural-looking, smooth blur without artifacts. Adjust the blur strength from subtle softening to extreme blur — perfect for backgrounds, privacy protection, and creative photography.
How to Use
Key Benefits
Performance Snapshot
30+
Tools Online
~2s
Median Process
0
Signup Required
Frequently Asked Questions
Our current tool applies blur to the entire image. For selective blurring (e.g., blurring a face), use a desktop editor like GIMP or Photoshop.
A blur radius of 3–5 is subtle for artistic effects. Use 10–20 to effectively hide sensitive information like faces or license plates.
Yes — blurred images compress more efficiently because they have less high-frequency detail, resulting in significantly smaller file sizes after JPEG or WebP compression.
Gaussian blur is a mathematical smoothing algorithm named after mathematician Carl Friedrich Gauss. It replaces each pixel's value with a weighted average of its surrounding pixels, where pixels closer to the center contribute more than distant ones. The result is a smooth, natural-looking softness — unlike box blur which creates a rigid, blocky appearance.
Upload your image and set the blur radius to 15–25 for strong anonymisation. This level of Gaussian blur makes faces and license plates unrecognisable while keeping the surrounding image clear. For full-image privacy (e.g. screenshots with personal data), use a radius of 20–30.
Yes — applying a moderate blur (radius 5–8) to a photo creates a shallow depth-of-field effect that isolates the subject aesthetically. This is popular for profile photos, social media backgrounds, and presentation slide imagery.
You can blur JPG, PNG, and WebP images. PNG files with transparency are supported — the transparent areas remain transparent after blurring.