In selective blur mode, you can undo the last region or clear all regions before downloading. Each region is tracked separately, so removing one re-renders the image without it.

Blur Tool

Blur & Pixelate Images Online

Apply Gaussian blur or pixelate/mosaic effects to your images. Full blur or selective area blur for censoring. 100% in-browser — nothing is uploaded.

Freeno limits, no sign-up

Blur & Pixelatetwo blur modes

100%private — runs in browser

👁

Drop images here to blur

or click to browse · JPG, PNG, WebP · Multiple files for batch mode

How to Blur an Image Online

Upload your image, choose between full blur or selective blur mode, pick Gaussian blur for a smooth effect or pixelate for a mosaic look, adjust the intensity slider, and download the result. In selective mode, you can click and drag to create rectangular blur regions on specific parts of the image. Everything runs locally in your browser for maximum privacy.

When to Use Image Blur

Image blur is commonly used for creative photography effects like depth-of-field simulation, background softening for portraits, and artistic compositions. It is also practical for reducing noise in images, creating thumbnail previews, and preparing images for use as subtle background textures on websites.

Privacy & Censoring Images

The selective blur and pixelate tools are ideal for censoring sensitive content before sharing images. Blur faces, license plates, personal information, or any identifying details. Since everything processes in your browser, your private images never touch any external server, making this tool safe for handling sensitive content.

Frequently Asked Questions

How do I blur part of an image? ▶

Switch to "Selective Blur" mode using the tab at the top. Your image will appear on a canvas. Click and drag to draw a rectangle over the area you want to blur. You can add as many regions as you need and adjust the blur type and intensity before applying.

What is the difference between blur and pixelate? ▶

Gaussian blur smoothly blends adjacent pixels to create a soft, out-of-focus look. Pixelate (mosaic) groups pixels into larger blocks and fills each block with a single color, creating a blocky, censored appearance. Pixelate is more commonly used for hiding sensitive information like faces or text.

Can I blur faces for privacy? ▶

Yes. Use Selective Blur mode and draw a rectangle over each face you want to obscure. You can use either Gaussian blur or pixelate. Pixelate is often preferred for censoring as it makes the content completely unrecognizable while clearly signaling the area has been intentionally obscured.

Is my photo uploaded to any server? ▶

No. All image processing happens entirely in your browser using the HTML5 Canvas API. Your images are loaded into memory locally and never leave your device. This makes the tool completely safe for sensitive or private images.

Can I undo the blur? ▶

In selective blur mode, you can undo the last region or clear all regions before downloading. The original image is always preserved, and the blur is re-rendered from scratch each time you modify regions. In full blur mode, you can adjust the intensity and re-apply at any time.

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Blur & Pixelate Images Online

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