How to pixelate an image?

Select your file and set the block size — larger values create a more extreme mosaic effect.

What does pixelation do to an image?

It groups pixels into square blocks, reducing detail to create a mosaic or retro video game appearance.

Is this like Photoshop's Mosaic filter?

Yes — Photoshop's Mosaic filter under Filter > Pixelate applies the same block-averaging effect. Both let you choose the block size; this tool runs free in your browser.

What file formats can I export?

You can export as PNG, JPEG, WebP, TIFF, BMP, or HEIC.

Is this tool free to use?

Yes — completely free, no account needed. Your images are processed entirely in your browser and never uploaded to a server. Downloads have no watermarks.

← Online Mosaic Tools

Pixelate Image Online

Click to get startedDrop your image here

tap to choose a fileor click to browse

Go to Pixelate editor →

What you can expect

This tool groups nearby pixels into square blocks to reduce detail. Smaller blocks retain more detail, while larger blocks create a stronger, mosaic-like effect, allowing control over how much the image is simplified.

Demo video

See Pixelate in action

Related tools

More BrushCue tools that fit this workflow.

See all tools →

Censor People with Pixelate

Censor people out of your images using this tool. To use, select your image and adjust the dimension of the pixelate.

Pixelate Reveal Animation

Transform any image into a stunning de-pixelation reveal animation. Simply input your image, set the duration, and choose the number of starting pixel columns to generate a smooth, high-quality animation that transitions from mosaic pixels to full clarity.

Halftone

Generates a halftone effect. Composes your image of a bunch of dots of sizes corresponding to the brightness of each area. Control the dot and background color, the size of the regions and a contrast adjustment to make this effect look exactly how you want it.

Censor Children with Pixelate

Censor children out of your images using this tool. Our AI automatically detects children in your photos. We then apply a pixelate effect to those children. To use, select your image and adjust the dimension of the pixelate.

Censor License Plate with Pixelate

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Online Mosaic Tools

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Frequently asked questions

How to pixelate an image?: Select your file and set the block size — larger values create a more extreme mosaic effect.
What does pixelation do to an image?: It groups pixels into square blocks, reducing detail to create a mosaic or retro video game appearance.
Is this like Photoshop's Mosaic filter?: Yes — Photoshop's Mosaic filter under Filter > Pixelate applies the same block-averaging effect. Both let you choose the block size; this tool runs free in your browser.
What file formats can I export?: You can export as PNG, JPEG, WebP, TIFF, BMP, or HEIC.
Is this tool free to use?: Yes — completely free, no account needed. Your images are processed entirely in your browser and never uploaded to a server. Downloads have no watermarks.

For developers

Use Pixelate from Python

Open the Jupyter notebook example to see how to run this tool from the BrushCue Python API, inspect the processing steps, and adapt the workflow for scripts or batch image jobs.

View Python notebook

Build your own

Pixelate Image Online

What you can expect

See Pixelate in action

Browse by category

Read more about Pixelate

How Pixelate Works

How to Use the Halftone Tool

Frequently asked questions

Use Pixelate from Python

Create projects with your custom presets