Skip to main content

Pixelate / Blur Image Online Free — PrivaTools

TL;DR: Upload an image, pick mosaic pixelation or Gaussian blur, set strength, and download a censored copy for privacy-safe sharing.

Pixelate or blur images online for free — obscure sensitive content (faces, license plates, addresses) before sharing. Choose mosaic-style pixelation or smooth Gaussian blur with adjustable strength.

Pixelate / Blur Image is one of 179+ free file utilities on PrivaTools. The entire stack is open source under the MIT license, so the privacy guarantees can be audited end-to-end. You can also run all 179 tools on your own infrastructure with one docker compose command.

How to Use Pixelate / Blur Image

  1. Upload an image — Drop a JPG, PNG, WebP, or BMP file with sensitive content you want to obscure.
  2. Choose effect + strength — Pick Pixelate (mosaic, still readable as 'something censored') or Blur (Gaussian, smoother). Strength slider 1-100.
  3. Download the result — The processed image downloads immediately. The original is deleted from the server seconds later.

Frequently Asked Questions

Pixelate vs blur — which should I use?

Pixelate is reversible (depixelization attacks can sometimes recover content) but reads clearly as 'censored'. Blur is harder to reverse but can look like a normal photo defect. For true privacy on serious content, use both: blur first then pixelate.

Can I select a specific region?

This tool applies the effect to the whole image. For region-selective censoring, upload to an image editor first (e.g. our Edit PDF for documents) and white-out or rectangle over the area.

Does the original get stored?

No — your image is processed in an isolated Docker container and deleted the moment the response is returned.

Last reviewed 2026-05-01 by the PrivaTools maintainers. Source code on (MIT-licensed, self-hostable).

Related Tools

Working with PDFs too? Try our Merge PDF, Compress PDF, PDF to Word, or all 175+ tools.