Pixelate Image Online Free
Runs 100% in your browser — your files never leave your device.
Censor a face or a license plate, create a retro 8-bit mosaic, or stylize a photo into chunky blocks. The block size sets how large each pixel square becomes. The pixelation is computed locally, so the original never leaves your device.
How it works
- 1
Add your image
Drop a JPG, PNG, or WebP into the box or click to browse. Nothing is uploaded.
- 2
Pixelate it
Tune the control until the effect looks right on your image.
- 3
Download the result
Click to apply and download the edited image in its original format.
About this tool
How pixelation works
Pixelation divides the image into square blocks and gives every block a single color — the average of the pixels it covers. The slider sets the block size: a few pixels wide for a subtle mosaic, large blocks for full 8-bit abstraction.
When to reach for it
Censor faces, license plates, and screen content before sharing; build retro game-style graphics; or abstract a busy background into soft blocks of color. Bigger blocks hide more but preserve less of the scene.
Tips for the best result
For censoring, pick a block size at least as large as the detail you are hiding — a face usually needs blocks of 20 pixels or more. If the mosaic still reveals too much shape, double the block size rather than doubling the area you cover.
Frequently asked questions
Is pixelation strong enough to hide sensitive information?
With sufficiently large blocks, yes — the original pixels are averaged away and cannot be recovered from the result. Use generous block sizes for faces, plates, and text; small blocks over text can sometimes be guessed at.
Will the original file change?
No — the pixelate effect is applied to a working copy in memory. Your original file stays untouched on your device, and the download is a brand-new file.
Which formats and sizes work?
JPG, PNG, and WebP files up to 50 MB. The result downloads in the original format with dimensions unchanged.
Does pixelation work the same on any image size?
The same block size looks finer on a 4000-pixel photo than on a 400-pixel thumbnail, because the blocks cover relatively less image. Judge the effect at the size the image will actually be viewed.