Pixelate an Image
Group pixels into square blocks to censor detail or stylize a photo. Runs entirely in your browser, so your data never leaves your device.
Drop a file here, or click to browse
Files never leave your device
Output
The result appears here as you type.
How to use Pixelate an Image
- 1. Drop in an image. Add the photo or graphic you want blocked into a mosaic, in any common format. The tool applies the block effect uniformly across the entire picture.
- 2. Adjust the Block size slider. Slide Block size up for a coarser, more abstract mosaic effect, or keep it low for a subtler pixelation that still hints at the original detail.
- 3. Download the pixelated image. Click generate and download the resulting file. Every group of pixels within a block is averaged into one flat color, giving the classic blocky look.
When to use Pixelate an Image
Pixelate an Image groups pixels into square blocks across a whole photo, useful either for censoring detail everywhere at once or for a deliberate retro, 8-bit visual style. Unlike the face or plate variants, this applies the effect to the entire image rather than one region.
- Creating a retro 8-bit style graphic. A game-themed design wants the blocky, low-resolution look of early video game graphics, and pixelating a modern photo at a large block size recreates that aesthetic directly.
- Obscuring an entire image's detail for a reveal effect. A quiz or trivia format wants to show a heavily pixelated version of an image first, letting viewers guess the subject before revealing the clear photo.
- Anonymizing an entire scene, not just one subject. A photo has multiple identifiable people or details scattered across it, and pixelating the whole image at once is simpler than marking each one individually.
Examples
Mosaic censor
Input
photo.png + block size 12
Output
photo.png rendered as 12×12 pixel blocks
About the Pixelate an Image tool
Pixelate an Image does its work locally, right in the browser. Group pixels into square blocks to censor detail or stylize a photo. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the Image Tools collection on EditSafely, a set of 200 small, focused Image utilities that share the same instant, private workspace.
You can shape the output with the Block size (px) setting, and the result refreshes the moment you change it. The finished file is put together in browser memory and saved with the Download button, so it never touches a server on the way to your disk. A worked example further down the page shows exactly what the tool produces for a real input.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Is Pixelate an Image free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Are my files uploaded to a server?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
Which files does Pixelate an Image accept?
It accepts images in any common format (PNG, JPG, WebP, GIF and more). There is no file size cap imposed by a server; very large files are limited only by your device's memory.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I save the output?
Click the Download button once the result is ready. The file is built in your browser's memory and handed straight to your downloads folder, without passing through a server.