Source: https://restorebunny.com/tools/pixelate-image/

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# Pixelate Image Online

Create a mosaic effect or obscure a selected rectangle before sharing a photo. Control the block size and position with a live preview.

Free · No signupPhotos stay in your browser

Block size 24 pxEffect area

**Live preview**Choose a photo to begin

Your result will appear here

Local processing. No account needed.

Pixelation is a visual effect, not a guarantee of anonymity. For sensitive information, use a fully opaque redaction and check the exported file.

**Give an old photo a fresh start**

Repair fading and scan damage with RestoreBunny’s AI photo restoration.

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## How to use pixelate image

1. Choose an image.
2. Apply the effect to the whole image or set a rectangular region.
3. Adjust the block size, inspect the result and download the PNG.

## A practical example

For an 800 × 800 image, a 40-pixel block setting creates a 20 × 20 mosaic. Block sizes are approximate when the dimensions are not divisible by the setting.

## Frequently asked questions

Can I pixelate just one part of a photo?

Yes. Select rectangle, then set its width, height and position. Everything outside that rectangle stays unchanged.

Is pixelation secure redaction?

No. Context or residual detail can still identify a person or information. Use opaque redaction for sensitive content rather than relying on this effect.

## Keep working on your photo

- [Crop unwanted areas](<https://restorebunny.com/tools/crop-image/>)
- [Remove image metadata](<https://restorebunny.com/tools/remove-image-metadata/>)

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By RestoreBunny · Reviewed 2026-10-12. Utilities use local calculations or [browser image processing](<https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial/Pixel_manipulation_with_canvas>). The download button identifies the output format. Animated images export one decoded frame. Keep your original files.