User Guide
- Upload your image or drag & drop it into the tool above.
- Adjust the settings to get exactly the output you need.
- Preview and download your result in seconds.
About the Blur Image tool
Some things should not be in a photo you are about to share: a face that did not consent, a number plate, a name badge, a house number, an address on an envelope, an account number in a screenshot. This tool lets you drag a box over anything and blur or pixelate it, then download the result — with the obscured detail genuinely removed from the pixels rather than covered over.
How to use it
Drop in a photo and drag a box across whatever should be hidden. Add as many boxes as you need — faces in a group shot, several plates in a street scene, a column of figures in a screenshot. The strength slider controls how heavy the effect is, Undo removes the last box, and the download is rendered at the image’s full original resolution, not the preview size.
Blur or pixelate?
| Effect | Looks like | Best for |
|---|---|---|
| Blur | A soft smear; the shape stays, the detail goes | Faces and backgrounds, where you want the photo to still look natural |
| Pixelate | Chunky blocks; obviously deliberate | Text, numbers and documents, and anywhere it should be visibly redacted |
For anything sensitive, pixelate at a high strength is the safer choice. It is visually obvious that information was removed, which avoids the impression that something was hidden by accident.
The warning worth reading
A light blur over small text is not always safe. Blurring is a reversible-looking operation to the eye but a lossy one in the pixels — yet at low strength, short strings such as a four-digit number can sometimes still be inferred from the remaining shapes. If the content genuinely matters, use a strong blur or heavy pixelation, then open the downloaded file and zoom in to check it yourself before sharing. For absolute certainty, a solid box drawn in any editor beats any blur.
Private by design
The image is drawn onto a canvas in your browser and never uploaded — which matters more here than on most tools, since the whole point is that the photo contains something you do not want seen. There is no size limit beyond what your device can open, no watermark and no sign-up. To crop before blurring, use the Smart Image Cropper; to shrink the finished file, the Image Compressor; and to mark a photo as yours, the Watermark tool.
Frequently Asked Questions
How do I blur a face in a photo for free?
Upload the photo, drag a box over the face and download. You can add as many boxes as you need, adjust the strength, and switch to pixelate. It is free, needs no account, and the image is never uploaded.
Is the blur permanent in the downloaded image?
Yes. The download is a new image with the effect baked into the pixels, so the original detail is not recoverable from that file. The original on your device is untouched.
Should I use blur or pixelate?
Blur suits faces and backgrounds where the photo should still look natural. Pixelate suits text, numbers and documents because it is visibly deliberate and harder to read through.
Can blurred text still be read?
At low strength, sometimes — short strings such as a few digits can occasionally be inferred. For anything sensitive use a high strength or heavy pixelation, and check the downloaded file zoomed in before sharing.
Does it work on my phone?
Yes. Dragging a box works with touch exactly as it does with a mouse, in Chrome and Safari on Android and iOS.
Is my photo uploaded to a server?
No. Everything runs on a canvas in your browser, so the image never leaves your device.