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Pixelator

Free online tool to pixelate (mosaic) images directly in your browser. No installation or upload required — your images never leave your device.

Upload an image, adjust the pixelation intensity, and export. All processing happens entirely in your browser with no server uploads.

1. Upload Image

2. Adjust Pixelation Count: 1

Fine (1) Coarse (30)

3. Export

Preview

No image loaded

How to Use

  1. 1

    Upload an image

    Click the "Select Image" area and choose an image file (JPEG, PNG, WebP, etc.) that you want to pixelate.

  2. 2

    Adjust pixelation intensity

    Move the slider to adjust the coarseness from 1 (original) to 30 (maximum mosaic). The preview updates in real time.

  3. 3

    Download the image

    Click "Download Image" to save the pixelated result to your device.

Frequently Asked Questions

Are my images uploaded to a server?
No. All image processing happens entirely in your browser. Your images are never sent to any server, ensuring complete privacy.
What image formats are supported?
Any image format supported by your browser can be loaded, including JPEG, PNG, WebP, GIF, BMP, and SVG. The output is saved in the same format as the uploaded file.
Does it work on mobile devices?
Yes. The tool features a responsive design and works on smartphones and tablets through the browser.
How does the pixelation intensity work?
The slider value (1–30) controls the block size. The image is downscaled and then upscaled without smoothing to create the pixelation (mosaic) effect. Higher values produce larger blocks and a coarser mosaic.