pngtoolskit.org
PNG and image utilities, in the browser
Say hi →

Pixelate / blur

privacy redaction · whole image or a rectangle

Drop images and obscure them with pixelation or Gaussian blur. Apply to the whole image, or to a specific x,y,w,h rectangle (e.g. to redact a face or sensitive label).

Drop image files here

Multiple files allowed

    no files
    Ready.

    When to use this tool

    Privacy redaction (faces, addresses, phone numbers, account IDs) before sharing screenshots or photos. Pixelate is the more recognisable "redacted" look; blur is gentler and looks more natural.

    Step by step

    1. Use the inspector or any image editor to find the rectangle of pixels to redact.
    2. Drop the image(s).
    3. Pick mode (pixelate or blur) and amount. 12 is a sensible pixelate default; 16 for blur.
    4. Enter the area as x,y,w,h — or leave blank to apply to the whole image.
    5. Click Apply.

    Use cases

    FAQ

    Is pixelation reversible?

    Effectively, no — for sensitive data the result is one-way. (Theoretically, weak pixelation of low-entropy text can sometimes be reversed; use a large block size or switch to a heavy blur for true privacy.)

    How do I find the right x,y,w,h?

    Drop the image into the inspector or open it in an editor with rulers; the top-left corner is (0, 0).

    Is the redaction "burned in"?

    Yes — the output is a fresh PNG/JPG/WebP with the redaction baked into the pixels. No layer to peek through.