Is this mosaic tool free?

Yes. You can pixelate image areas for free with no signup.

How do I select an area?

Upload an image, then click and drag on the preview to draw a rectangle. You can move or resize the rectangle afterward.

Can I create multiple mosaic areas?

Yes. Draw as many separate mosaic rectangles as you need, and delete or clear them at any time.

Can I control the mosaic strength?

Yes. Increase the block size for a stronger pixelated privacy effect.

No. Mosaic processing runs locally in your browser and your files stay on your device.

Add Mosaic to Image Online for Free

Draw mosaic areas to hide sensitive details, adjust the block size, then download instantly.

No upload. Your files stay on your device.

How to add mosaic to an image

1 Upload the image you want to protect.
2 Drag on the preview to draw a mosaic rectangle.
3 Move or resize selected mosaic areas as needed.
4 Adjust mosaic block size for stronger or lighter pixelation.
5 Export the privacy-protected image.

Private by design — your images are processed locally and never leave your device.

Drop images here

or click to upload · paste from clipboard

Supports JPG, PNG, WebP, AVIF, SVG, HEIC, and ICO · Up to 20 images at a time

Hide Sensitive Details

Mosaic pixelation is useful for hiding faces, names, license plates, addresses, screenshots, account numbers and other private details before sharing an image.

Browser-Based Privacy Protection

The mosaic effect is applied with Canvas directly in your browser. Files are not uploaded, and you can export as JPG, PNG, WebP or AVIF after masking sensitive areas.

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Frequently Asked Questions

Is this mosaic tool free?: Yes. You can pixelate image areas for free with no signup.
How do I select an area?: Upload an image, then click and drag on the preview to draw a rectangle. You can move or resize the rectangle afterward.
Can I create multiple mosaic areas?: Yes. Draw as many separate mosaic rectangles as you need, and delete or clear them at any time.
Can I control the mosaic strength?: Yes. Increase the block size for a stronger pixelated privacy effect.
Are images uploaded?: No. Mosaic processing runs locally in your browser and your files stay on your device.