TinySandyFree Online Tools

Image Blur Tool

Soften an entire picture with a Gaussian-style blur. Drag the radius slider and watch the before-and-after preview, then download the full-resolution result. Edges stay solid instead of fading, and browsers without a native canvas blur filter use a built-in box-blur approximation automatically.

Image Editing Runs in your browser

Blur Your Image

Drag and drop your image (JPG, PNG, WebP, GIF or BMP) here, or click to browseAccepted: JPG, JPEG, PNG, WEBP, GIF, BMP. Up to 40 MB.
In pixels of the full-size picture. The preview is scaled to match.
Used for JPEG and WebP. Higher means a larger file.
Fills transparent areas when the result is saved as JPEG or BMP.

How to Use the Image Blur

  1. Add your picture.
  2. Move the Blur radius slider; the preview shows the effect straight away.
  3. Choose an output format.
  4. Press Blur and download the result.

About This Tool

Designers making soft backgrounds for text overlays, people softening a photo before sharing, and anyone testing how a picture looks out of focus.

Input: JPG / PNG / WebP / GIF / BMP  ·  Output: PNG / JPG / WebP.

Features and Limitations

Features

  • Radius from 0 to 100 px with live before-and-after preview.
  • Native canvas blur where supported, with a box-blur fallback for browsers such as Safari.
  • Edges are extended, so the picture does not fade to transparent at the border.
  • Full-resolution processing on download.

Limitations

  • The whole picture is blurred; you cannot blur only a face or licence plate with this tool.
  • Light blur is reversible with some software, so do not rely on it to hide sensitive text or faces; use the Pixelate tool with a large block size or cover the area.
  • The fallback box blur is an approximation of a Gaussian blur and may differ slightly between browsers.
  • Large radius values on very large pictures can take a few seconds.
  • Processing happens on your device, so very large files depend on your browser's available memory.

Example

A radius of 8 px on a 1000 px wide picture gives a clearly soft image while shapes stay recognisable; 40 px leaves only colour regions.

Frequently Asked Questions

What does the blur radius mean?

It is the standard deviation of the Gaussian blur in pixels of the full-size image. Larger values blur more.

Why does the preview look different from a bigger download?

The preview is scaled down, and the radius is scaled with it so both should look alike. Fine differences are normal.

Does it work in Safari?

Yes. If the browser's canvas filter is not available, the tool switches to its own box-blur method automatically.

Can I use blur to hide private information?

Not safely. Strong pixelation or covering the area is a more reliable way to hide faces and text.

Does my picture leave my device when I blur it?

No. The blur runs in your browser, which is useful when the picture is private.

Related Tools

More like this: all Image Editing tools, all Image & Design tools or the TinySandy home page.