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

Practical Guide

A set of browser-based image tools for compression, conversion, cropping, metadata checks, and privacy-friendly masking. Useful before publishing images on social media, preparing web assets, or cleaning up presentation materials.

When this tool is useful

Image Mosaic helps with common Image Tools tasks that require quick checking, conversion, or creation. It supports workflows such as Choose between mosaic and blur effects, Three selection modes: rectangle, circle, and freehand without forcing users to switch pages or apps.

Processing and privacy

Your input is processed in the browser and is not designed to be sent to a server just to use the tool. This makes it suitable for temporary checks, draft work, and pre-publication cleanup.

Workflow tip

After checking the result, use the related tools and same-category links near the bottom of the page to continue the surrounding task. Frequently used tools also appear in the Recently Used section.