Image Pixelate Tool

Turn a picture into a grid of solid squares, each filled with the average colour of the pixels it covers. Use small blocks for a subtle retro look and large blocks for a strong mosaic. The live preview shows the original and pixelated picture together.

Image Editing Runs in your browser

Pixelate Your Image

JavaScript is required. This tool runs in your browser, so please enable JavaScript to use it. The instructions below are still available.

Image

Drag and drop your image (JPG, PNG, WebP, GIF or BMP) here, or click to browseAccepted: JPG, JPEG, PNG, WEBP, GIF, BMP. Up to 40 MB.

Block size Size of each square in pixels of the full-size picture.

Output format

Quality Used for JPEG and WebP. Higher means a larger file.

Background colourFills transparent areas when the result is saved as JPEG or BMP.

How to Use the Image Pixelate

Add your picture.
Move the Block size slider; the preview updates as you go.
Pick an output format.
Press Pixelate and download the result.

About This Tool

Designers creating 8-bit style artwork, social posters wanting a mosaic effect, and people obscuring detail in a picture.

Input: JPG / PNG / WebP / GIF / BMP · Output: PNG / JPG / WebP.

Features and Limitations

Features

Block sizes from 2 to 100 px.
True block averaging, so every square is one even colour.
Live before-and-after preview.
Transparency is averaged along with colour.

Limitations

The whole picture is pixelated; there is no selection tool for a single area such as a face.
Small block sizes on a large picture can still leave text readable. For sensitive information use big blocks or cover the area.
Pictures above 100 megapixels are refused before any pixels are processed.
Processing happens on your device, so very large files depend on your browser's available memory.

Example

A 1200 × 800 picture with a block size of 20 becomes a grid of 60 × 40 squares.

Frequently Asked Questions

How is each block's colour chosen?

The red, green, blue and alpha values of all pixels in the block are averaged.

Is pixelation safe for hiding information?

Large blocks hide detail well, but weak pixelation can sometimes be partly reversed. For passwords, faces or documents cover the area completely instead.

How do I get a pixel-art look?

Use a block size of 8 to 16 on a small picture, then enlarge the result with the Image Resizer set to a fixed size.

Is my picture sent to a server for pixelating?

No. The blocks are calculated in your browser, so private pictures stay on your device.