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ToolNest AI
Free

Image Blur

Blur images online for free using Gaussian Blur, Box Blur and Pixel Blur with live preview.

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Drop an image or click to browse

JPG · PNG · WebP · GIF · BMP · TIFF · AVIF

About Image Blur

Apply Gaussian, Box or Pixel (mosaic) blur to any image entirely in your browser — no uploads, no accounts. Adjust blur strength with a real-time preview, pick your export format (JPG, PNG, WebP) and quality, then download the blurred image instantly. Supports JPG, PNG, WebP, GIF, BMP, TIFF and AVIF. Uses GPU-accelerated Canvas rendering so even large photos process quickly.

Frequently Asked Questions

Upload your image, choose a blur type (Gaussian, Box or Pixel), drag the strength slider to set the intensity, then click Apply Blur to process and download the result.

This tool blurs the entire image in one pass. For selective blurring of a specific region, you can crop the area first, blur it, and re-assemble the image in an image editor.

Gaussian blur creates a smooth, natural-looking softening effect. Box blur uses multiple uniform averaging passes and produces a slightly flatter result. Pixel blur (mosaic) divides the image into large colour blocks, creating a pixelated or censored look.

For PNG export, quality is lossless. For JPG and WebP you can set the compression quality (1-100); higher values preserve more detail at the cost of larger file sizes.

Yes. All blur operations run entirely in your browser using the Canvas 2D API. No image data is ever sent to a server.

Yes, fully free with no account required and no usage limits.