Blur & Pixelate

Apply Gaussian blur or pixelation effect to images. Adjust intensity with a slider for privacy masking or artistic effects.

Drag & drop an image or click to browse

PNG, JPG, WebP, AVIF, TIFF — max 10MB

APIPOST /api/v1/images/blur
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Key Features

100% Free

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Instant Results

Real-time analysis with detailed output

REST API Access

Integrate into your workflow via API

Accurate Data

Live queries to authoritative sources

What is Blur & Pixelate?

The blur and pixelate tool applies Gaussian blur or pixelation effects to images with an adjustable intensity slider for precise control. Gaussian blur creates a smooth, out-of-focus effect by averaging pixel values with their neighbors using a mathematical kernel. Pixelation reduces the image to visible square blocks, creating a mosaic-like effect that completely obscures fine detail.

Both effects are commonly used for privacy protection (hiding faces, license plates, personal information in screenshots, sensitive data in documents), creating artistic backgrounds and depth-of-field effects, generating LQIP (Low Quality Image Placeholders) for progressive image loading on websites, and censoring content for moderation purposes. This free online image blur tool processes everything in your browser — your images are never uploaded to a server, which is especially important when blurring sensitive or private content.

How to Use

  1. 1Upload the image you want to blur or pixelate (supports JPEG, PNG, WebP, GIF)
  2. 2Choose the effect type: Gaussian blur (smooth, dreamy) or pixelation (blocky, mosaic)
  3. 3Adjust the intensity slider: low values for subtle softening, high values for complete obscuration
  4. 4Preview the result in real-time as you adjust the slider
  5. 5Download the processed image when satisfied with the effect

Who Uses This

System Administrators

Monitor and troubleshoot infrastructure

Developers

Debug network issues and integrate via API

SEO Specialists

Verify domain configuration and performance

Security Analysts

Audit and assess network security

Frequently Asked Questions

How do I blur an image online for free?
Upload your image to the blur tool, select Gaussian blur as the effect type, and adjust the intensity slider to control how strong the blur is. Low values (5-10) give a subtle soft-focus effect, medium values (15-25) create a clear out-of-focus look, and high values (30+) make the image nearly unrecognizable. The preview updates in real-time so you can see the result before downloading. All processing happens in your browser — the image is never uploaded to any server.
What is the difference between blur and pixelation?
Gaussian blur smoothly blends pixels together using a mathematical function, creating a soft, dreamy, out-of-focus effect similar to a camera's depth-of-field. Pixelation replaces groups of pixels with single solid-colored blocks, creating a mosaic or retro game-like effect. For privacy masking, pixelation is generally more effective because it completely destroys fine detail in the blocked area, while blur can sometimes be partially reversed with deblurring algorithms. For artistic effects and backgrounds, Gaussian blur usually looks more natural and professional.
Can I blur just part of an image?
This tool applies the effect to the entire image. To blur only a specific region (like a face or license plate), you can use this workflow: crop the region you want to blur, apply the blur effect, then use any image editor to composite the blurred section back onto the original image. Many dedicated image editors (Photoshop, GIMP, even mobile apps) offer selective blur brushes for this specific use case.
Is blurred content truly private and unrecoverable?
Gaussian blur at high intensity is generally considered safe for privacy, but there are caveats — researchers have demonstrated partial recovery of blurred text and simple patterns using AI deblurring techniques. Pixelation at sufficient intensity (small enough pixel blocks) is more resistant to reversal because it completely destroys the fine detail. For sensitive content (personal data, faces, documents), use high-intensity pixelation rather than blur, and verify the result is truly unreadable before sharing.
Are my images safe when using this tool?
Yes — all blur and pixelation processing happens entirely in your browser using client-side JavaScript. Your images are never uploaded to any server, never stored, and never leave your device. This is particularly important for this tool since you're likely blurring sensitive content (faces, personal information, confidential documents) — complete client-side processing ensures that sensitive data remains private.

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API Endpoint

POST /api/v1/images/blur
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