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Blur Image

Soften a whole image, with a slider from barely there to heavy.

Image
Drop an image here or click to browse
or paste from clipboard (Ctrl+V) · JPEG, PNG, WebP
Files stay in your browser. Nothing is uploaded.

How to blur an image

  1. Add your image

    Drop a JPG, PNG, or WebP onto the tool, click to browse, or paste one from your clipboard. The blur applies straight away.

  2. Set the strength

    Drag the radius slider between 1 and 100 pixels. Higher values are softer, and the preview updates as you move it.

  3. Download the result

    Click Download image to save the file in the format it arrived in, at the original pixel dimensions.

Why use this tool

Radius up to 100 pixels

Enough range to go from a light softening that keeps the subject readable to a heavy wash that works as a background behind text.

Edges stay clean

Opaque photos have their edges extended before the blur is applied, so the frame does not fade into a pale halo the way a naive blur leaves it.

Transparency is preserved

Images that already contain transparency are blurred without an added backdrop, so a PNG or WebP cutout keeps its see-through surroundings.

Same size in, same size out

The pixel dimensions do not change, so a blurred version drops straight into the layout the original came from.

Nothing is uploaded

The effect runs on your device with no account, no queue, and no watermark.

About this tool

A blur averages each pixel with its neighbours, and the radius decides how far that averaging reaches. Small radii take the edge off noise and fine texture. Large ones destroy detail entirely and leave only broad shapes and color, which is exactly what you want from an image sitting behind a headline or a login form.

One detail separates a good blur from a sloppy one: what happens at the border. Blurring an image on its own pulls in the emptiness beyond the frame, leaving a washed-out band around the outside. This tool extends the edge pixels outward before blurring an opaque photo, so the border stays as solid as the middle. Images that already contain transparency skip that step, because filling their surroundings would destroy the cutout they were made for.

The effect covers the whole image rather than a selected region, so treat it as a styling tool and not a redaction tool. Anything genuinely sensitive should be cropped out with the image cropper before the file is shared. For a harder-edged version of the same idea, use the pixelate tool, and to shrink the finished file use the image compressor. Blurred images compress unusually well, so the saving is often large.

Frequently asked questions

How do I blur an image?
Drop the image into the box. It is blurred immediately at a moderate radius, and the slider lets you make it softer or sharper before downloading.
Can I blur only part of the image?
No. The blur covers the whole image. To hide something specific, crop it out rather than relying on an effect applied over the top.
Why do some blur tools leave a pale border?
Because the blur averages in the empty space beyond the edge of the image. This tool extends the edge pixels outward first on opaque photos, which keeps the border solid.
Does blurring change the file size?
Usually it shrinks it. Blurred images contain far less fine detail, which compresses well. The before and after sizes are shown under the preview.
Are my images uploaded anywhere?
No. Everything happens in your browser and the file is never sent to a server.

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