Last updated ·Published ·By the WiserWork team
Pixelate Image
Add a blocky mosaic effect to any photo — JPG, PNG, WebP or GIF
Click or Drag & Drop an image
No file selected
Upload any image, drag the block-size slider until the area you want to obscure turns into a coarse mosaic, and download the result — nothing ever leaves your browser.
What is the Pixelate Image?
This is a format-agnostic version of the classic mosaic censor effect: it shrinks the picture down to a tiny grid of average colors, then blows each cell back up without smoothing, so every pixel becomes a visible square block. Unlike a blur, which merely softens detail, pixelation destroys it outright once the block size is large enough, which is why it is the standard way to redact faces, license plates, screens and documents in a screenshot.
Common Use Cases
- Blocking out a face, license plate or screen in a photo before sharing it publicly
- Redacting a signature, account number or address inside a scanned document
- Adding a deliberate retro mosaic look to an avatar or piece of art
How to Use the Pixelate Image
- Upload any JPG, PNG, WebP or GIF from the box above.
- Drag the block size slider until the region you care about is unrecognizable in the live preview.
- Check the full image to make sure nothing sensitive slipped through at the edges.
- Click Download Pixelated Image to save the result as a PNG.
Frequently Asked Questions
Does this work on any image format?
Yes. Unlike format-specific pixelate tools, this one accepts JPG, PNG, WebP, GIF and anything else your browser can decode, and always exports a PNG.
How coarse should the blocks be to hide something?
Increase the slider until you can no longer make out edges or features inside the target area in the live preview — larger blocks discard more of the original detail and are harder to reverse.
Is the whole image pixelated, or just part of it?
This tool pixelates the entire image uniformly. If you only need to censor one specific region, use the Blur Face in Image tool instead, which lets you select just the area to obscure.
A coarse enough mosaic genuinely destroys the underlying detail, which is what makes it useful for redaction rather than just decoration.