Free Pixelate Image Tool nothing stored

Turn the entire frame into a square mosaic

The pixelator divides the working picture into a grid and replaces the detail inside each square with its average color. The effect reaches every part of the frame. It does not detect a subject, pick out lettering or protect a sharp area.

Use it to make a blocky photo, a reveal-game image or a background built from broad colors. The original composition stays recognizable at finer settings. Larger squares simplify that composition further without generating new objects or textures.

Judge block size against the picture’s dimensions

The Block size control starts at 16 pixels. Increase it for a coarser mosaic or reduce it for more recognizable detail. Run the effect again after changing the setting, then compare the new result.

The setting measures pixels in the working image, not a percentage of its width. The same value therefore looks finer on a larger picture. Judge the squares at the size you plan to display the result, especially when making a small avatar from a large source.

A blocky photo does not become a hand-drawn sprite

A mosaic can suggest a retro game look, but the tool does not redraw a character or choose a limited color palette. Each block inherits color from the source. Fine shapes can merge, and outlines may need manual work if you are making a sprite.

For a photo-based avatar or poster texture, try a finer grid first. For a sprite with an exact grid, palette and carefully placed edges, continue in a pixel-art editor. This page has no palette, dithering or target-grid controls.

A mosaic over text is not secure redaction

Pixelated letters may look unreadable while their block colors still reveal information about the source. Do not rely on this effect to conceal passwords, private messages or identifying numbers. A larger setting is not a security guarantee.

Remove sensitive content from the shared picture or replace it with a fully opaque cover in an editor, then inspect the exported file. This pixelator supplies neither a redaction brush nor a solid-cover mode. Its local processing protects the original from a processing upload; it does not prove that the result is safe to publish.

Check mosaic dimensions and transparent edges after saving

Pixelation keeps the working canvas dimensions. A very large source can be reduced first to fit the device’s canvas limits, so the exported picture is not guaranteed to match every original. Changing the block size itself does not set a new width or height.

Transparent areas participate in the effect: squares that cross an outline can become partly transparent. The saved file type depends on the input and may change. Inspect the actual export before placing it in a layout; the number of mosaic blocks does not predict its file size.

Build the mosaic where the original photo is stored

Your browser reads the selected file and calculates the mosaic locally. The picture is not uploaded for pixelation, and this effect does not download a generative model. The website still needs to load its code, and some source images need a local decoding helper.

Building the block mosaic needs a compatible browser on your iPhone, Android device, tablet or computer. Processing time depends on the picture and device; there is no fixed completion time. If a large mosaic cannot be rendered, preserve the source and pixelate a reduced copy.

When the mosaic should stop at one part of the frame

There is no rectangle or brush selection here. If you only want to obscure detected faces, use the separate Face Blur tool and inspect its coverage. Whole-image pixelation will also change the background, clothing and other details.

Use the linked Edit Image tool when the job is to describe a replacement object or another change to the scene. That is a different task from averaging the existing colors into blocks. Keep the unmodified source for any later edit that needs its detail.

How do you use the image pixelator?

1. Choose a picture for the mosaic

   Open a JPG, PNG, WebP or HEIC image whose entire frame you want to turn into blocks.

2. Set the square size

   Adjust Block size, starting from 16 pixels, and press Pixelate.

3. Compare the block pattern

   Move the before-and-after divider to inspect the mosaic. Change the setting and run again if the squares look too fine or too coarse.

4. Save your result

   2 free downloads, 8 more after sign-in.

When is the free image pixelator enough?

Image Pixelator: questions and answers