About pixelating images
This tool pixelates an image — drag a box over a face, name or other detail to censor just that area with a mosaic effect, or pixelate the whole picture. You choose the block size and download the result. It runs in your browser, so your image is never uploaded.
How Pixelate Image works
How to use it
- Drop or choose an image.
- Drag a box over the area to censor, or click Pixelate whole.
- Adjust the block size and download.
How it works
Pixelation shrinks the selected area down to a tiny grid and scales it back up without smoothing, so each block becomes one solid colour — the familiar mosaic censor effect. A larger block size makes bigger, more anonymising squares.
Why use it
It is the quick, private way to hide faces, license plates, addresses, account numbers or anything sensitive before you share a screenshot or photo. Because it runs locally, the original never leaves your device.
Common uses
- Censor a face in a photo
- Hide a name or address
- Blur out a license plate
- Redact account or card numbers
- Anonymise a screenshot
- Apply a mosaic effect
- Hide sensitive details before sharing
- Pixelate a whole image
Frequently asked questions
How do I pixelate part of an image?
Drag a box over the area you want to censor; it is pixelated instantly.
Can I pixelate the whole image?
Yes — use the Pixelate whole button.
How strong is the censor?
Increase the block size for bigger, more anonymising squares.
Can the original be recovered?
No — once downloaded, the pixelated area cannot be reversed.
Are my images uploaded?
No — everything happens in your browser.
Can I censor several areas?
Yes — drag a box over each area you want to hide.
What format is the output?
A PNG image.
Is it free?
Yes — completely free with no sign-up.