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Pixelate Image

Pixelate image files by turning them into square blocks, across the whole picture, only in the areas you draw, everything except those areas, or, with an in-browser AI cut-out, just the background or just the person. Draw rectangles or ovals over faces, licence plates and text, soften the edges, and set a block size from 2 to 64 pixels with a live preview and a before and after slider. Pixel art mode reduces the colour palette for a retro sprite look, adds optional grid lines and can save a tiny one-pixel-per-block version. It is a quick way to censor an image before posting, anonymise screenshots, or make a mosaic thumbnail. Apply the same settings to a batch and download a ZIP. Nothing is uploaded.

Always freeNo sign upRuns in your browser
Bulk supported. Drop several files for one ZIP download. You can also paste an image with Ctrl+V.

How to use

01

Add your image

Drop a JPG, PNG, WebP or HEIC file, or several at once, or paste one with Ctrl+V. The first image shows in the preview.

02

Choose what to pixelate

Pick Whole image, Selected areas, Everything except areas, Background (AI) or Person or subject (AI). In the area modes, drag rectangles or ovals on the preview.

03

Pick a style and download

Choose Mosaic or Pixel art, set the block size and colours, then click Pixelate and download. A batch uses the same settings and downloads as a ZIP.

Why Pixelate Image

How block size changes the result

The tool shrinks the image so that each block becomes a single pixel, then scales it back up without smoothing. The block size is how many original pixels each square covers, so the same setting looks stronger on a small image than on a large one. The table shows how many blocks fit across a 1200 pixel wide photo. For a 4000 pixel photo from a modern phone, roughly triple the block size to get the same look.

Block sizeBlocks across 1200 pxTypical effect
4 px300Slight texture, detail still readable
8 px150Retro, 8-bit style look
16 px75Faces hard to recognise at a distance
32 pxabout 38Faces and plates unreadable
64 pxabout 19Large abstract mosaic

Mosaic or pixel art

Mosaic keeps every colour of each block, which is what you want for censoring: the result still matches the photo's tones, so the hidden area does not stand out more than it has to. Pixel art also averages each block but then reduces the whole image to a small palette, picked from the photo's own colours. That flattening is what makes a photo read as a sprite.

For pixel art, start with 16 colours and a block size that gives 60 to 120 blocks across the image, then adjust. Grid lines help when you want to recreate the design as cross-stitch, beads or blocks in a game.

Common questions

How do I pixelate only part of an image?
Choose Selected areas and drag a rectangle over the part to hide, or pick Oval for faces. Add as many areas as you need. Everything outside them stays untouched.
How do I pixelate a face in a photo?
Use Selected areas with the Oval shape, drag over the face and raise the block size until the face has only a few blocks across. For a whole person, Person or subject (AI) finds them for you and pixelates only them.
What block size should I use to pixelate an image?
Block size is in pixels of the original image, so the effect depends on the photo's resolution. On a 1200 pixel wide photo, 8 to 12 px gives a light retro look, while 24 px or more makes faces and text unreadable. Check the preview, which shows the result at the current settings.
Is pixelation safe for hiding text such as passwords?
Not always. Small blocks over short text can sometimes be reconstructed by trying likely values. For secrets, use a solid black box, such as Redact in the Screenshot Editor, which leaves nothing to recover.
Can I pixelate many images at once?
Yes. Drop several images together. The style, block size, mode and any areas drawn on the first image are applied to all of them, and the results download as a ZIP.
Can I make pixel art from a photo with the pixelate tool?
Yes. Choose the Pixel art style, set the block size, and lower Colours in the palette to 8 to 32 for a limited-colour sprite look. Grid lines draw the blocks like a pattern chart, and Save as a tiny sprite exports one pixel per block, ready to scale up in a game or editor.
Does pixelating keep the image size and format?
Yes, unless you choose the tiny sprite option. The output has the same pixel dimensions as the input. By default JPG, PNG and WebP keep their format, and Save as lets you pick PNG, JPG or WebP. PNG suits pixel art, because it keeps hard edges exact.
Are my images uploaded when I pixelate them?
No. Pixelation happens with the canvas in your browser, the AI modes run the model on your device, and the files are saved to your device.

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