Free online pixelate image tool

Pixelate Image Online

Use this free tool to pixelate image files right in your browser. Group nearby pixels into larger square color blocks. Apply the mosaic to the whole image or one rectangular selected area, adjust the block size, preview the result, and export it.

One PNG, JPEG, or WebP · Up to 15 MiB · Up to 8192 × 8192 px and 40 megapixels

Browser-based image processing. No PixelArtNow image-upload or cloud-save feature.

1. Choose an image

One PNG, JPEG, or WebP · Up to 15 MiB · Up to 8192 × 8192 px and 40 megapixels

2. Choose where to pixelate

Pixelate area

Apply the square mosaic across the full image when you want to pixelate image content evenly.

Block size12 px

Choose square blocks from 4–64 source pixels. Larger blocks hide more visual detail when you pixelate image files.

Visual obscuring only — not secure redaction or guaranteed anonymization.

A valid image starts in Whole image mode with a 12 px block size.

Changes preview automatically. The latest block size, mode, or selection is committed when the interaction ends.

3. Preview the result

Undo and redo keep the 20 most recent applied operations.

4. Export

Review your pixelate image result and the safety warning before downloading. PixelArtNow adds no watermark.

Export format

Preserves transparency where present.

Lossy output at the current fixed quality; transparent areas become white.

WebP export is not available in this browser. Choose PNG or JPEG.

Choose one image to begin.

Drop an image here

or choose one PNG, JPEG, or WebP image file from your device to pixelate image content

Pixelate a Whole Image or Selected Area

Choose Whole image for a consistent pixelate image treatment across the picture. Choose Selected area to draw, move, and resize one rectangle while leaving the rest of the image unchanged.

Choose one PNG, JPEG, or WebP image to use as your pixelate image source.
Start with the automatic whole-image result, or select one rectangular area to pixelate image content.
Set a block size from 4–64 px to control how coarse your pixelate image result looks.
Compare the automatically updated pixelate image result with the original.
Read the safety warning, then export a supported format.

Adjust Block Size and Mosaic Style

PixelArtNow uses one effect in the current tool: a square mosaic. Smaller blocks keep more recognizable detail, while larger blocks make the pixelate image result coarser. The tool does not provide blur, hexagon, triangle, brush, or multi-region effects.

Use Pixelation for Visual Effects or Privacy

A square mosaic can create a stylized look or make part of an image less immediately readable. You can pixelate image content for a draft or low-risk visual treatment, but it must not be treated as security.

Preview and Export Your Image

Compare the original with the pixelated result before downloading your pixelate image export. Export PNG or JPEG; WebP appears only when your browser can create it. PNG can preserve transparency, while JPEG flattens transparent areas to white.

Current Tool Limits

One image at a time.
PNG, JPEG, and WebP input only; GIF, SVG, HEIC, AVIF, TIFF, and PSD are not supported.
Maximum 15 MiB, 8192 px per side, and 40 megapixels.
Selected area supports one draggable, resizable rectangle—not a brush or multiple regions.
The current effect is a square mosaic only.
WebP export depends on browser support; PNG and JPEG remain available.
Pixelation does not guarantee anonymization, irreversible removal, or safety to share.
Unsaved work can be lost if you reset, refresh, close the page, or the browser stops.

Frequently Asked Questions

How do I pixelate an image online?

Choose one PNG, JPEG, or WebP image, and PixelArtNow applies a default whole-image mosaic automatically, so you can pixelate image files in seconds. Adjust the block size or choose Selected area for one rectangle, compare the result, read the safety warning, then download a supported format.

Can I pixelate only part of an image?

Yes. Selected area mode lets you draw, move, and resize one rectangular selection. It does not support a brush or multiple regions.

What pixel block size should I use?

Use smaller blocks when you want to keep more recognizable detail and larger blocks for a coarser mosaic. The current range is 4–64 source pixels, so you can tune your pixelate image result from subtle to bold.

Can I pixelate a face, license plate, or text?

You can place the rectangular selection over visible content, but pixelation is visual obscuring only. It is not secure redaction and does not guarantee anonymization or irreversible removal.

Which image formats can I export?

PNG and JPEG are available. WebP is shown only when your browser supports it; PNG is the fallback when WebP is unavailable. JPEG is lossy and turns transparent areas white.

Is pixelation enough to protect private information?

No. Do not rely on pixelation for highly sensitive information. Remove or crop the sensitive content, or use a purpose-built redaction tool, before sharing.