What is the Image Mosaic tool?

It is a free online tool that lets you apply mosaic or blur effects to specific areas of an image. You can select areas using rectangle, circle, or freehand modes — perfect for hiding faces, license plates, or other sensitive information.

Is it free? Is my data safe?

Completely free. All processing happens in your browser, and your images are never uploaded to any server.

Can I use it on a smartphone?

Yes, it works in mobile browsers. Use the freehand mode to draw mosaic areas directly with your finger using touch controls.

Image Mosaic

An online tool for applying mosaic or blur effects to specific areas of photos and images. It offers three flexible selection modes — rectangle, circle, and freehand — with adjustable effect intensity for precise control. Ideal for protecting personal information before posting on social media, masking sensitive details in presentation materials, and hiding faces or license plates in public photos.

Drop or select an image

Select File

Effect

Selection Mode

Roughness: 20px

Fine (5px)Coarse (80px)

Change ImageUpload

Image Mosaic Features

Choose between mosaic and blur effects
Three selection modes: rectangle, circle, and freehand
Freely adjust effect intensity
Process multiple areas and download as PNG

How to Use

1Upload an image by drag & drop or file selection
2Choose effect (mosaic/blur) and selection mode (rectangle/circle/freehand)
3Select the area, apply the effect, and save

FAQ

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