Is the file uploaded when I mask it?

No. The mosaic is drawn locally in your browser.

Yes — drag out the areas to mask; please check yourself that the sensitive details are fully covered.

Can the masked file be restored?

A lossy mask generally cannot be reversed — keep an unmasked copy if you need one.

Cover faces, plates and ID numbers in one click — drag out the areas to protect, processed locally, nothing uploaded.

100% browser-based · files never uploaded

Drag images here, or click to choose

Up to 50MB each · max 20 images · processed locally

Effect

Mosaic block size

Drag on the preview below to select the areas to cover

🔒 Your files never leave your browser

Is the file uploaded when I mask it?: No. The mosaic is drawn locally in your browser.
Can it cover a face?: Yes — drag out the areas to mask; please check yourself that the sensitive details are fully covered.
Can the masked file be restored?: A lossy mask generally cannot be reversed — keep an unmasked copy if you need one.