Add an adjustable Gaussian blur to a photo — soft haze to heavy blur.
Apply a smooth, adjustable Gaussian blur to any image — perfect for soft backgrounds, a frosted-glass look, or obscuring sensitive details. Rendered on our secure engine and deleted immediately.
Upload your file using the tool above.
Adjust any settings to your preference.
Click the process button and wait for results.
Download your output using the download button.
Only if it is heavy. Light blur on text can sometimes be reversed, because the original characters remain statistically recoverable — researchers have demonstrated this on blurred and pixelated screenshots. For anything that genuinely matters, such as account numbers or addresses, cover it with a solid block instead.
A small radius of 2–5 pixels softens gently, useful for backgrounds behind overlaid text. Around 10–20 gives the frosted-glass look common in interface design. Beyond 30 the content becomes pure colour and shape. Radius scales with image size, so a large photo needs more blur for the same visual effect.
It weights nearby pixels on a bell curve, producing a smooth, natural softening rather than the boxy artefacts of a simple average. It is what photo editors and CSS filters use, so the result matches what people expect visually — closer to genuine optical defocus than a crude approximation.
Yes, Blur Image is completely free. No signup, no account, and no watermark on outputs. A Pro tier is available for 100 AI ops/day and larger file sizes.
Blur Image uploads your file over an encrypted connection to our own processing server, converts it, and returns the result. The file is deleted immediately after processing and is never used for anything else. It is not sent to any third party, and we keep no copies.
Drop an image to blur it
Smooth Gaussian blur — control the strength
Drop your image into the stage to begin.
What it does: Applies a true Gaussian blur — perfect for soft backgrounds, privacy, or a frosted-glass look.
Quality & privacy: Rendered on our sharp/libvips engine and deleted immediately — never stored.