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Pixelate Image

Pixelate an image with an adjustable block size using the free pixelate tool. It creates a mosaic effect or hides a face and other detail privately, in your browser.

Choose an image

Pixel size 10px

What is Image Pixelate?

Pixelating an image divides it into squares and replaces every pixel inside a square with that square's average colour, turning detail into flat blocks. The larger the block size, the harder the content is to read. This is a genuine block-average mosaic, not a decorative filter: the image is shrunk so each block becomes a single pixel, then scaled back up with smooth shading off, so the saved result is exactly what you see. Because the export only holds the averaged blocks, the detail inside a pixelated region is genuinely gone. That is why people reach for pixelation rather than blur when they want a face, a plate number or an address hidden for good — it reads clearly as intentional redaction. The same effect works as an art style, turning a photo into chunky, retro pixel art. It runs entirely in your browser, so the original never leaves your device.

How to use Image Pixelate

Choose an image file from your device.
Drag the pixel size slider to set how chunky the blocks are.
Watch the preview update as you adjust the block size.
Click Download to save the pixelated image.

Example

A screenshot containing a license plate — block size set to 20px. The plate becomes a flat patch of colour with no readable structure. Larger blocks hide more; a value too small may leave shapes that are still recognisable.

Who is this pixelate image tool for?

Creators and designers: They add a retro mosaic or pixel-art effect to give an image a playful, lo-fi style.
Marketers: They pixelate a logo, face or number before a campaign image goes public.
Developers: They censor sensitive coordinates or identifiers entirely in the browser, with nothing uploaded.
Photographers: They anonymize bystanders in a photo while keeping the rest of the scene intact.

Pixelation block sizes

Block size (px)	Effect	Typical use
4	Fine mosaic	Subtle pixel-art style
10	Medium mosaic	Censor a logo or label
20	Coarse mosaic	Hide a face or text
40	Very coarse	Heavy censor / abstract art

Common use cases

Hiding a face, plate number or address before you post or share an image.
Applying a retro, mosaic art style to a photo.
Obscuring text or a logo while keeping the rest of the image recognisable.
Making a region unreadable in a screenshot that you publish.

Pro tips

For privacy, increase the block size until the detail is genuinely unreadable — then go a step further.
Keep a copy of the sharp original; pixelated areas cannot be recovered.
For sensitive text, an opaque black box hides more reliably than a light pixelation.

FAQ

How do I pixelate an image?

Choose an image, drag the pixel size slider to set how chunky the effect is, then download the pixelated result.

Is it free and private?

Yes. It is free, unlimited, and runs entirely in your browser so your images never leave your device.

Why would I pixelate an image?

To anonymise a subject, add a retro mosaic art style, or hide a logo or face while keeping the image recognisable.

What is a good block size for privacy?

Use a large block size until the detail is unreadable — bigger blocks hide more.

Can pixelation be undone?

No. The detail inside a pixelated region is genuinely gone, so keep a sharp original.

What is the difference between pixelation and blur?

Pixelation replaces detail with hard blocks and hides more; blur gives a softer, more natural look.