Blur Image Background Online for Free
Add smooth, adjustable Gaussian blur to photos or backgrounds in your browser. Whether you need to obscure private information, soften background clutter for portraits, or create modern frosted glass aesthetics for web headers, blur images cleanly in seconds.
Upload your files or drag them here to start processing instantly in your browser.
How to Use Image Blur
- Upload Photo: Select the image you want to blur from your device.
- Adjust Blur Radius: Drag the blur slider to set the desired blur intensity (from subtle softening to heavy obscurity).
- Preview Transformation: Check the real-time canvas preview to verify the blur effect.
- Download Blurred Image: Download the finalized image directly to your device.
Key Features & Benefits
Privacy Protection
Easily hide license plates, phone numbers, faces, and sensitive account details.
Aesthetic Depth of Field
Create beautiful blurred backgrounds that make foreground subjects stand out.
Real-Time Canvas Slider
Smooth interactive control over the exact blur radius in pixels.
Strict Client-Side Security
Sensitive photos never leave your device or travel over public networks.
Privacy & File Limits
Client-Side Privacy: Image blurring executes entirely in your browser using client-side canvas filters. No image bytes are uploaded to remote servers.
Usage Limits: Tested on desktop with images up to 20 MB. High-radius Gaussian blur processing speed scales with image resolution.
Frequently Asked Questions
How do I blur a photo online?
Upload your image, adjust the blur slider to your preferred radius, and click download.
Can I use this tool to obscure confidential data on screenshots?
Yes! Blurring is an effective way to obscure personal identification, phone numbers, or addresses before sharing.
Does blurring reduce the overall image resolution?
No. The image retains its original pixel dimensions while softening internal frequency details.
Are my photos uploaded to a cloud server?
No. Everything is calculated and rendered locally in your browser memory.
Can I blur an image on my smartphone?
Yes, the blur tool is fully compatible with mobile browsers on Android and iOS.
Is there any watermark on the blurred output?
No, all exported images are 100% clean and free of watermarks.