Image Blur
Apply professional blur effects to images online. Blur entire photos or select specific areas with adjustable intensity. Perfect for privacy protection, face blurring, and background softening. Free tool, no upload required.
How do I blur an image?
Upload your image by clicking or dragging it to the upload area. Choose between Full Image blur or Area Selection mode. Adjust the blur intensity using the slider (1-50 pixels). Click Apply to preview the result, then download in PNG or JPEG format.
How do I blur a specific area of an image?
Select "Area Selection" mode, then click and drag on the image to draw a rectangle over the area you want to blur. You can add multiple blur areas, adjust each one individually, or remove them. Each area will have the same blur intensity.
What blur intensity should I use?
The blur radius ranges from 1 to 50 pixels. For light blurring like softening backgrounds, use 5-10 pixels. For moderate privacy protection, use 10-20 pixels. For heavy blurring to completely hide details like faces or text, use 20-50 pixels.
Can I blur faces for privacy protection?
Yes, this tool is perfect for privacy protection. Use Area Selection mode to draw rectangles over faces, license plates, or any sensitive information. The blur effect will completely obscure the details while keeping the rest of the image clear.
Is my image uploaded to a server?
No, absolutely not. All image processing happens locally in your browser using the Canvas API. Your images never leave your device, ensuring complete privacy and security. There's no upload, no server processing, and no data collection.
What output formats are supported?
You can download the blurred image in PNG format (lossless, larger file size) or JPEG format (compressed, smaller file size with adjustable quality). PNG is recommended for images with text or sharp edges, while JPEG is better for photos.
Can I blur multiple areas with different intensities?
Currently, all blur areas share the same intensity setting. If you need different blur levels for different areas, you can apply the blur effect multiple times by downloading the result, re-uploading it, and blurring additional areas.
Does the tool work on mobile devices?
Yes, the tool is fully responsive and works on smartphones, tablets, and desktop computers. You can touch and drag to draw blur areas on touchscreens. The interface automatically adapts to your screen size.
What is Gaussian blur?
Gaussian blur is a widely-used image blurring technique that uses a Gaussian function to calculate the blur effect. It creates a smooth, natural-looking blur that's commonly used for privacy protection, background softening, and artistic effects. This tool uses Gaussian blur for high-quality results.
Can I undo blur areas?
Yes, in Area Selection mode, you'll see a list of all blur areas you've added. Each area has a delete button (trash icon) that allows you to remove it individually. You can also clear all areas and start over.
What image formats can I upload?
You can upload most common image formats including JPEG, PNG, GIF, WebP, BMP, and SVG. The tool will process the image and allow you to download the result in PNG or JPEG format regardless of the input format.
Is there a file size limit?
There's no strict file size limit, but very large images (over 10MB) may take longer to process and could cause browser slowdowns. For best performance, we recommend using images under 5MB. The tool works entirely in your browser, so processing speed depends on your device.
Can I use this tool for commercial purposes?
Yes, this tool is completely free for both personal and commercial use. There are no restrictions, no watermarks added, and no registration required. You own full rights to the images you create.
How does area selection work?
In Area Selection mode, you can draw rectangular regions on your image by clicking and dragging. The tool displays a preview of the blur effect in real-time as you draw. You can add multiple rectangles, move them, resize them, or delete them individually.
How to Use Image Blur
Blur entire photos or just selected areas with adjustable intensity — great for hiding faces or protecting privacy — and everything stays in your browser.
- Load the photo you want to blur into the editor.
- Choose to blur the whole image, or brush over specific areas such as faces or license plates.
- Adjust the Blur Intensity slider and watch the Preview Result until the blur is strong enough.
- Pick the Output Format — PNG, JPEG, or WebP — and set the Quality for JPEG or WebP.
- Export the blurred image to your device.
For faces and small text, use more blur than looks necessary — strong blur survives screenshots and re-compression better.
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