Free · No Signup

Pixelate an Image Online

Classic censor effect. Select any area, pixelate it, download instantly.

🔒 No upload · Runs in your browser · Instant download
Installing GIMP or Photoshop for a one-time mosaic is slow. This browser editor opens from any device with a modern web engine — upload, pixelate a zone, download. No plugin, no installer, no waiting on cloud queues.
Mode
Shape

Drop your image here

Or click to browse · Paste with Ctrl+V also works

PNG · JPG · WebP · GIF
How It Works
1

Upload

Drop your image in or paste from clipboard.

2

Pick Mode

Black Box, Blur, or Pixelate.

3

Select Areas

Rectangle, oval, or freehand lasso — then hide what you selected.

4

Download

Hit Download PNG. Done.

ImageCompressor.comAfter editing your image, use ImageCompressor to reduce the file size before uploading or sharing. Free and browser-based.

Visit ImageCompressor.com →

Pixelate Image Online — Browser Mosaic Editor

To pixelate image online, you only need HideShot and a raster file. The page decodes the picture locally, applies square blocks inside each selection, and encodes a PNG you can attach anywhere.

Online does not mean uploaded to our servers. The word refers to access — you reach the tool through a URL — while computation still happens on your CPU via canvas APIs.

Combine pixelation with other modes on the same canvas: mosaic a logo, black out an email address, blur a face in the corner, then save once.

Frequently asked questions

Do I need to install software to pixelate online?

No installation. A current version of Chrome, Firefox, Safari, or Edge is sufficient.

Does pixelation preserve PNG transparency?

Uploads with transparency are flattened during editing. The downloaded PNG includes your mosaic over the visible areas.

Can I pixelate text in a screenshot?

Yes. Draw a box over chat bubbles, terminal output, or form fields. Tight boxes keep surrounding UI readable.

What happens if I refresh the page mid-edit?

Unsaved work is lost because nothing is stored remotely. Download before navigating away.