Pixelate an Image Online Free
Turn your image into blocky pixels with an adjustable mosaic effect. Slide from a light, retro pixel-art look to heavy censoring blocks that hide a face, a licence plate, a name or an address before you share a screenshot. Drag a box to pixelate just one area, or pixelate the whole image — either way it runs in your browser with a live preview, so the sensitive image you're protecting is never uploaded anywhere.
Your files never leave your device. All processing happens locally in your browser.
Drag & drop your image here
or click to browse
Files never leave your device
Up to 50MB per file
Why use this tool
Adjustable Block Size
A single slider sets how big the mosaic blocks are, from a subtle pixelation to a strong, unreadable censor — with a live preview as you drag.
Pixelate One Area
Drag a rectangle over a face, plate or number to censor only that spot while the rest of the photo stays sharp — or leave it unselected to pixelate everything.
100% Private
Files are processed entirely in your browser using the Canvas and WebAssembly APIs. Nothing is ever uploaded to a server.
Free Forever
No account, no watermark, no daily limits. Every tool on PixelResize is free to use as often as you like.
How to pixelate image
- 1
Upload a JPG, PNG or WebP image.
- 2
Optionally drag a box over the area you want to censor.
- 3
Drag the slider to set the block size.
- 4
Download your pixelated image.
Frequently asked questions
Related tools & sizes
How to Pixelate an Image to Hide Faces and Sensitive Details
Pixelation is the go-to way to censor a face or a licence plate — but only if you use big enough blocks. Here's how to do it safely.