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Pixelate image

Pixelate an image online, free and private.

Pixelate an image online with an adjustable block size that runs in your browser. Use it to censor part of a photo or add a mosaic effect, then download the result. Your image is never uploaded, and the tool is free with no sign-up and no watermark.

  • Runs in your browser
  • Censor detail
  • No uploads
Why use this

Fast, private, and free.

  • Adjustable block size from a fine mosaic to heavy censoring, set with one slider.
  • Live preview so you get the exact pixel size before export.
  • No file size limit, so high-resolution photos pixelate without a cap.
  • Download as JPEG, PNG, or WebP, with everything processed on your device.
How it works

Three steps, all on your device.

  1. 01

    Add your image

    Drop a photo onto the page. It loads into the editor with nothing uploaded to a server.

  2. 02

    Set the block size

    Drag the pixelate slider from a fine mosaic to heavy censoring and preview the effect live.

  3. 03

    Download the result

    Export as JPEG, PNG, or WebP and save the pixelated image, free and without a watermark.

FAQ

Good to know.

How do I pixelate an image online?
To pixelate an image, open the Pixasur Pixelate Image tool, add your photo, and drag the block size slider until the mosaic looks right, then download it. The pixelation is applied in your browser by averaging each block of pixels, so no software install is needed.
Can I use pixelation to censor a photo?
Yes, the Pixelate Image tool is commonly used to censor or hide details by increasing the block size until the area is unreadable. A larger block averages more pixels together, so the original detail cannot be recovered from the exported image.
Is the pixelate tool free and private?
Yes, the Pixasur Pixelate Image tool is completely free with no sign-up and no watermark, and it runs entirely in your browser so your photo is never uploaded. All pixelation happens on your device.
Can I control the pixel block size?
Yes, the Pixelate Image tool uses an adjustable block size slider, so you can go from a fine mosaic to large censoring blocks. A live preview shows the exact block size before you export the final image.
What formats can I download the pixelated image in?
The Pixelate Image tool exports to JPEG, PNG, or WebP, with no file size limit on the photo you load. The pixelated result is re-encoded on your device, so the download starts right away with no upload.
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