Mosaic / Pixelate Image

Apply a mosaic (pixelate) effect to cover sensitive spots while leaving the rest of the image readable.

Files never leave your device

Drop an image here

or click to browse — then draw a region on the preview

Screenshots and street photos often include faces, license plates, or account numbers you should not publish. Mosaic—also called pixelation—replaces a region with coarse blocks so details become unreadable while context remains.

Weak mosaics can be reversed if the block size is too small. Cover generously, use a strong cell size, and prefer solid crop-out when you do not need the surrounding pixels at all.

Blur softens differently; mosaic is better when you want an obvious censorship look. Combine with crop-image when entire margins should disappear.

How to use

Upload the image — Open the screenshot or photo that contains sensitive areas.
Select regions to mosaic — Brush or box the faces, plates, or text you must hide.
Set mosaic strength — Increase block size until the detail is unreadable at normal viewing distance.
Review at 100% zoom — Confirm nothing identifiable remains, including reflections.
Download the censored image — Export and share the derivative—keep the uncensored original offline.

Use cases

Support screenshots — Hide customer PII before posting to public issue trackers.
Social street photography — Obscure bystanders’ faces when you lack release forms.
Tutorial clips — Mask API keys or emails that slipped into a captured UI.

Tips

When in doubt, mosaic a larger area—partial letters can still leak identity.
Do not post the original alongside the mosaic.
For moving video, use a video editor; this tool targets still images.
Blur-image is an alternative look if pixel blocks feel too harsh.

FAQ

Is mosaic secure?

Strong pixelation helps, but determined actors may still attempt recovery on weak settings. Crop away secrets when possible.

Local editing?

Designed to process the image in your browser session.

Can I mosaic multiple spots?

Yes—cover every sensitive region before downloading.

Text still readable?

Increase block size or cover more padding around characters.

Animated GIFs?

Use still-frame exports or dedicated video tools for motion.

Related tools?

blur-image and crop-image complement censorship workflows.