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KioTools
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  • Runs locally

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Image Blur & Redact

What is this tool?

Blur & Censor Tool is a client-side image editor focused on obscuring parts of a photo. You select the area — a face, a sign, a screen, a tattoo — and apply blur or pixelation at an adjustable strength. It's built for quick, manual censoring rather than automatic face detection.

When to use it

  • Blurring a bystander's face in a photo before posting it publicly
  • Pixelating a license plate in a photo of a car or accident scene
  • Covering a visible screen, document, or sign in the background of a photo
  • Obscuring a tattoo, scar, or other identifying detail before sharing
  • Preparing images for a blog post or report where certain details shouldn't be visible

How to use it

  1. 1Open the Blur & Censor Tool and upload your photo.
  2. 2Select the blur or pixelate brush/shape tool.
  3. 3Paint or draw over the area you want to obscure.
  4. 4Adjust the strength or block size of the effect as needed.
  5. 5Preview the result across the whole image.
  6. 6Download the censored photo.

Frequently asked questions

Does this tool automatically detect and blur faces?

No, it's a manual tool — you select the areas to blur or pixelate yourself, which gives you control over exactly what gets covered.

What's the difference between blur and pixelate here?

Blur softens the selected area with a smoothing effect, while pixelate breaks it into visible blocks of averaged color; both obscure detail but look different.

Can I censor more than one area in the same photo?

Yes, you can apply the effect to as many separate areas as needed before downloading.

Is my photo uploaded to a server for processing?

No, the entire editing process happens in your browser using canvas-based image processing.

Can I undo a blur if I make a mistake?

Most edits can be adjusted or redone before you export the final image; always review the full photo before downloading.