Blur Images Online

Blurring an image on this page is a short loop: drop the file, drag the radius slider, and download. The tool accepts JPG, PNG, and WebP files up to 50 MB and applies a Gaussian blur in your browser with the Canvas API, so nothing is uploaded. The radius slider controls how strong the effect is, from a gentle softening to a heavy smear. This is the fastest way to soften a busy background, mask details you would rather not show, or build a base layer for text.

1. 1Drop or select an image. JPG, PNG, and WebP files up to 50 MB are accepted.
2. 2Drag the radius slider and watch the preview update. A larger radius is a stronger blur.
3. 3Set the quality if you are saving as JPG or WebP. PNG is lossless, so the slider is hidden.
4. 4Download the blurred image. Your original file is never modified.

A Gaussian blur averages each pixel with its neighbors, which smooths away fine detail while keeping the overall color and shape. The radius sets how many neighboring pixels are blended, so a small radius softens edges and a large radius dissolves them into broad areas of color. That makes blur useful for two opposite jobs: hiding detail you do not want shown, or producing a smooth, uniform backdrop for other content.

Often, a little. Blurring smooths detail, and lossy encoders such as JPG and WebP spend their size budget on detail and noise, so a smooth image tends to compress smaller than a sharp one. The saving is usually modest, and it is a side effect rather than the reason to blur. If your goal is a smaller file, the compressor is the better tool.

The blur uses the Canvas filter API, which is supported in Chrome, Firefox, Edge, and Safari 18 and later. In older Safari versions the blur may not apply, so the image would pass through unchanged; the rest of the page still works. If you need the blur to appear everywhere, test the result in the browser you or your audience uses.

The right radius depends on the job, and the preview removes the guesswork.

• Low radius, roughly 2 to 6: a gentle softening that keeps the image clearly recognizable.
• Medium radius, roughly 8 to 15: smooths detail into soft areas of color, good for text backdrops.
• High radius, roughly 20 or more: smears the image into broad shapes, good for hiding content.

The output keeps the format of the source file: a JPG stays a JPG, a PNG stays a PNG, and a WebP stays a WebP. The quality slider applies to JPG and WebP output and is hidden for PNG, because PNG is lossless. When the output is JPG, transparent areas are filled with white. The blur is baked into the pixels of the downloaded file, so keep the original if you may want the sharp version back.

Every image on this page is processed by the Canvas API inside your browser. Nothing is uploaded, no account is required, and there is no queue. That makes blur a safe way to soften a sensitive document, a personal photo, or internal material without handing the file to a third-party service. The result is usually ready in under a second.