Online Tool Store
Image Blur Tool
Blur an entire image or just a selected region with an adjustable blur amount, previewed live and downloadable as a PNG. Runs entirely in your browser.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
How the image blur tool works
- Upload an image and choose whether to blur the whole thing or just a region.
- For a region, drag a rectangle over the area you want blurred.
- Adjust the blur amount and download the result as a PNG.
The method
For whole-image blur, the canvas's blur filter is applied to the entire drawn image. For a region, the canvas clips to your selected rectangle before applying the same filter, so only pixels inside that clipped area are affected.
FAQ
Can I blur just part of the image?
Yes. Switch to "Selected region" and click-and-drag on the preview to draw a rectangle - only that area is blurred, the rest of the image stays sharp.
What blur technique is used?
The browser's native CSS/Canvas blur filter, a Gaussian-style blur, applied at the pixel radius you set with the slider.
Why blur part of an image instead of the whole thing?
Common uses include hiding a background distraction, softening a busy area behind text, or blurring a specific detail while keeping the rest of the photo in focus.
Is my photo uploaded anywhere?
No. The blur is applied entirely on a canvas in your browser - your image never leaves your device.
How we compare
| Feature | Online Tool Store | Photoshop | Online blur tools |
|---|---|---|---|
| No file upload - runs in your browser | ✓ | ✓ | ✗ |
| Whole-image or region blur | ✓ | ✓ | Varies |
| Free, no install | ✓ | ✗ | ✓ |
For a quick, private blur without opening design software, Image Blur Tool gets it done in seconds.