Blur an Image
Soften an entire photo with a smooth, Gaussian-style blur. Use a light radius for a gentle haze or a large one to turn a picture into a wash of color.
- On-device
- No sign-up
- Batch
- Free, no watermark
Drop images on the plate
or paste with Ctrl/⌘ V
Processed on this device
How it works
- 01Drop, choose or paste the images to blur.
- 02Set the blur radius between 1 and 50 px.
- 03Select Process to blur every image.
- 04Download each file, or use Download all for a ZIP.
Why use this tool
Fine radius control
Set the blur from 1 to 50 px and watch the live preview until it’s just soft enough.
Smooth, even softening
A Gaussian-style blur spreads detail evenly with no boxy artifacts, even at large radii.
Private by design
Photos you want to blur are often personal. They’re processed in this tab and never sent anywhere.
Supported formats
Use cases
Backgrounds behind text
A blurred photo makes a calm backdrop for a quote card, slide title or login screen, keeping the mood without competing with the words.
Placeholder images
Developers can blur a hero image heavily and scale it down to make a light placeholder that shows while the full image loads.
Soft-focus effect
A 2–4 px blur takes the edge off a harsh, overly detailed photo for a dreamier look on a card or invitation.
Technical details
The blur applies to the whole image at the same strength; there is no brush or region selection. That matters for privacy: if you need to hide one face, a name or a license plate, crop the sensitive part away or cover it rather than blurring the entire picture. The radius is in pixels, so the same setting looks stronger on a small image than on a large one. 10 px is heavy on a 600 px wide thumbnail but subtle on a 4000 px photo. Blurred images compress very well, so the saved JPG or WebP is often noticeably smaller than the original.
Your files stay with you
This tool runs entirely inside your browser using Web Workers and WebAssembly. Your images are never uploaded, never stored on a server and never used to train AI. Close the tab and they’re gone. Learn more
Frequently asked questions
Can I blur only part of an image, like a face?
No. This tool blurs the entire image evenly. To hide a specific detail, crop it out, or place a solid shape over it in another editor. For sensitive information, covering is safer than blurring anyway, because light blurs can sometimes still be read.
What blur radius should I use?
It depends on image size. For a soft-focus look on a full-size photo, try 2–5 px. For a background behind text, 15–30 px works well. At 50 px most photos become smooth color gradients. Watch the live preview while you adjust.
Why does the blur look stronger on small images?
The radius is measured in pixels. On a small image, 10 px covers a larger share of the picture than on a big photo, so the same setting looks much heavier. Resize first if you want consistent results across images of different sizes.
Does blurring make the file smaller?
Often, yes. Compression works by describing detail, and a blurred image has much less of it. A blurred JPG or WebP is commonly smaller than the sharp original at the same quality, though the exact saving depends on the photo and radius.
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