Blur Image Free
Apply adjustable Gaussian blur to photos and screenshots for privacy or artistic focus.
- 100% free
- Files stay on your device
- No sign-up, no watermark
Choose files or drag & drop
Upload PNG, JPG, JPEG, WEBP, BMP files to convert locally inside your browser.
What is Blur Image?
Blur entire photos for background wallpapers or obscure private details before sharing. The browser computes multi-radius 2D box and Gaussian convolutions locally with instantaneous rendering.
How to use Blur Image
- 1
Add your file or input
Choose a supported file, drag it onto the upload area, or type/paste the data this tool works with.
- 2
Adjust the options
Pick the output format, quality, size or other settings the tool offers. Defaults work well for most files.
- 3
Process and download
Run the tool and save the result. Processing happens in your browser, so nothing is uploaded to a server.
Frequently asked questions
How does Gaussian blur work mathematically?
Gaussian blur applies a normal distribution bell curve convolution kernel across neighboring pixels, creating smooth, organic transitions without harsh edges.
Can blurred text or faces be unblurred by someone else?
No. Gaussian blur permanently discards high-frequency pixel details by blending them irreversibly into neighboring colors. Once saved, the original data cannot be reconstructed.
What is the maximum blur radius supported?
You can adjust blur intensity from a subtle 1px softening filter all the way to heavy 50px abstract color washes.
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