Blur Image Online

Use Heavy (15px) or Maximum (24px) for face blurring. Subtle and Medium blurs soften the image visually but leave enough detail that faces may still be recognisable, especially at larger resolutions. For strong privacy protection of faces, license plates, addresses or other identifying information, use at least 15px radius. Maximum (24px) ensures content is unrecognisable at any zoom level.

Whole image blur applies the Gaussian blur filter to every pixel in the image uniformly. This is useful for creating background blur effects, artistic softening, or making text unreadable across an entire screenshot. Region blur lets you draw rectangles over specific parts of the image and blurs only those areas, leaving everything else sharp. Region mode is the right choice when you need to hide a face, a license plate, a name, an address or any other specific detail while keeping the rest of the image clear.

Yes. Every region stores its own blur radius, set from the current slider value at the moment you draw it. Selecting a region loads its own radius back into the slider, and moving the slider while one or more regions are selected updates only those regions, everything else keeps whatever strength it already had.

Yes. Drag a region's body to move it. When exactly one region is selected, 8 handles appear on its corners and edges for resizing. Hold Shift or Ctrl while clicking, or turn on the Select multiple toggle, to select more than one region at once, moving or batch-editing the blur strength then applies to the whole selection together.

Yes. In region blur mode you can draw as many rectangles as you need. Each one is added to a list you can see and manage. Click a region to select it, then click the x button to remove it, or use Delete selected to remove several at once. All regions are applied in a single export pass, so the download contains every blur area in one file.

Gaussian blur is the standard blur algorithm used in photo editing software including Photoshop, Lightroom and GIMP. It works by averaging each pixel with its neighbours using a weighted distribution that follows a Gaussian curve. Pixels closer to the center contribute more than pixels at the edges of the sample radius. The result is a smooth, natural-looking blur rather than a blocky or sharp-edged softening. The radius setting controls how many pixels each point is averaged across.

The live preview uses a CSS filter that's deliberately scaled down to match how the blur will look once exported at full resolution, since a given pixel radius would otherwise look noticeably stronger on a shrunk preview than it does on the full-size image. The download itself is produced by the Canvas API at your source image's full resolution. The two are designed to closely approximate each other, though CSS filter rendering and canvas rendering aren't pixel-identical, so very minor differences can occur.

No. JPG and WebP both export at a fixed quality, there's no adjustable quality slider on this tool. PNG is always lossless. If you need a smaller file at a specific quality afterward, run the download through a compression tool as a second step.

JPG, PNG, WebP, GIF, BMP and AVIF are all accepted as input. Output is limited to JPG, PNG or WebP regardless of what you upload.

No. Everything runs in your browser using the Canvas API. Your image never leaves your device. EXIF metadata including GPS location, camera make and timestamps is automatically stripped from the output file during the canvas re-encode, which is an additional privacy benefit beyond the blur itself.

JPG produces the smallest file and is the best choice for photos. PNG is lossless and works well for screenshots, graphics and images with text. WebP is smaller than both at equivalent quality and is supported by all modern browsers. If you are sharing the blurred image on social media or by email, JPG or WebP is usually the best choice.