Blur Image

Drag a box over a face, a licence plate or anything on screen you would rather not publish, and blur it. Or blur the whole picture. The file never leaves your browser — which is the point, when the thing you are hiding is the reason you came.

Drop PNG, JPG, WebP, GIF or BMP here, or click to select

Up to 20 files, 50 MB each

This tool adds blur. It cannot remove it. If you are looking to sharpen an already-blurry photo, that needs a machine-learning model that invents detail, and this is not that tool.

Blurring to redact, properly

Most blurring is redaction: a screenshot with a customer name in it, a photo with someone in the background who did not agree to be published, a bug report showing half an API key. Three things worth knowing before you rely on it.

  • Use a strong radius. A light blur over text can sometimes be reconstructed, because the shapes of the letters still influence the surviving pixels. If it still reads as text at a glance, it is not strong enough.
  • Check the exported file, not the preview. A preview is scaled down, which makes any blur look more convincing than it is. Open the download at full size.
  • For genuinely sensitive data, use a solid box. Blur is reversible in principle for simple content; a filled rectangle is not reversible at all. Certainty beats aesthetics when the cost of being wrong is someone's address.

Why doing this in the browser matters

Every tool on this site runs locally, but it matters most here. If you are blurring something because it should not be public, uploading the unredacted original to a stranger's server first is the one step that undoes the whole exercise. Nothing is transmitted here — you can watch the Network tab stay silent while you work. See our privacy policy for what that means in detail.

Frequently Asked Questions

How do I blur part of an image?

Drop the image in, leave the mode on "Blur a region", and drag across the part you want hidden. Adjust the strength slider until the detail is gone, then download. The blur is written into the exported pixels, not laid over the top as a removable layer.

How do I blur a face in a photo?

Drag a box over the face and raise the strength until features are unreadable. For a face, a radius somewhere around 20 to 40 pixels is usually enough, but check at full size before you publish — a blur that looks solid in a small preview can still be legible when the image is viewed large.

Can this un-blur or sharpen a blurry photo?

No. Recovering detail from a blurry photo requires a machine-learning model that invents plausible pixels, which is a different kind of tool and not one we offer. This tool only adds blur. If your photo is already blurry, nothing here will fix it.

Is blurring safe for redacting sensitive information?

Blur at a high enough radius destroys the underlying pixels in the exported file, so it cannot be reversed by undoing a layer. Two cautions: use a strong radius, because a light blur on text can sometimes be reconstructed, and always check the exported file rather than the preview. If the information is genuinely sensitive, a solid box is safer than any blur.

Does the blur affect the rest of the image?

In region mode, no. Everything outside the box you drag keeps its original pixels at full quality. Only the selected area is redrawn.

Are my images uploaded anywhere?

No, and that matters more here than on most tools. If you are hiding a face or an address, sending the unredacted original to someone else’s server is exactly the wrong move. Everything runs on a canvas in your own browser and the download comes from memory on your device.

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