Image Pixelator
Pixelate an entire image or create a retro mosaic effect with an adjustable block size. Great for censoring or 8-bit art. Download the result. 100% private.
Last reviewed by the Radiatus Cloud team
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Reduce an image to blocks
Pixelating replaces areas of an image with solid blocks of averaged colour, producing either a retro mosaic aesthetic or a way to obscure detail. This tool pixelates a whole image or a region with an adjustable block size, so you can dial in anything from a subtle mosaic to heavy blocks, all in your browser.
Two very different uses
The same effect serves opposite goals. As a style, coarse pixels evoke early digital graphics and give an image a deliberate retro look. As a privacy measure, heavy pixelation over a face or a number removes the underlying detail by averaging it away, which is more thorough than a soft blur. The block size is the control: larger blocks mean a stronger effect for either purpose.
Local, so redaction stays private
When the goal is to hide sensitive detail, processing the image in the browser is essential, because uploading it to pixelate it would expose the very thing you are trying to obscure. Here the image is processed on your machine, so the original detail never leaves it. Set the block size, apply, and export.
Related tools
- EXIF Viewer — Extract hidden EXIF data (Camera, GPS, Settings) from images.
- Favicon Generator — Generate favicons and app icons at every required size from one source image, with the exact HTML to reference them.
- Placeholder Image Generator — Generate placeholder images at any size with custom colours and label text. Produced in your browser as downloadable files, no external hotlinking.
- Image Resizer — Resize images in your browser with aspect ratio control and format conversion. Files are processed locally and never uploaded.
Frequently Asked Questions
What does the block size control?
How large each averaged block is. Larger blocks give a stronger effect, whether you want a coarse retro look or thorough redaction of detail.
Is pixelation good for privacy?
Yes, when strong. Heavy pixelation averages away the underlying detail, which is more thorough than a soft blur for hiding a face or a number.
Can I pixelate just part of an image?
Yes. You can apply it to a region, such as a face or an account number, or to the whole image for a mosaic effect.
Is my image uploaded?
No. The processing runs in your browser, which matters for redaction, since the original detail never leaves your machine.
Can I download the result?
Yes. Set the block size, apply the effect, and export the image.
Privacy & Security
All processing happens locally in your browser — nothing is uploaded.
How to Use
Upload an image and drag the block-size slider. Click Download to save the pixelated image.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
Related Tools
EXIF Viewer
ImageExtract hidden EXIF data (Camera, GPS, Settings) from images.
Favicon Generator
ImageGenerate favicons and app icons at every required size from one source image, with the exact HTML to reference them.
Placeholder Image Generator
ImageGenerate placeholder images at any size with custom colours and label text. Produced in your browser as downloadable files, no external hotlinking.