Blur Face / Mosaic Guide

What this tool is for

Censoring faces, license plates, home addresses, phone numbers, or any other sensitive information in photos before sharing them publicly. This tool lets you manually select the exact areas to censor, giving you full control over what is visible and what is hidden.

When you should use it

When you want to share a group photo but some people haven't consented to being identified, when posting a photo of your vehicle online that shows your license plate, when sharing a screenshot with personal account details visible, when a journalist needs to protect a source's identity, or when a parent wants to share photos of their child safely.

Step-by-step instructions

• Open the Blur Face tool and upload your image.
• Select either the 'Blur' or 'Mosaic' effect from the toolbar.
• Click and drag over any area you want to censor — the effect is applied instantly.
• Adjust the strength/intensity slider to ensure sufficient coverage.
• Zoom in to verify that sensitive areas are fully obscured before downloading.
• Download the censored image — the effect is permanently baked into the file.

How it works & Privacy

The tool applies a mathematical Gaussian convolution filter (blur) or a pixel-grouping algorithm (mosaic) directly to the canvas area you select. When you download the file, the effect is permanently rendered into the pixel data — it cannot be 'undone' by any standard software once the file is saved.

Common Mistakes to Avoid

• Using a blur strength that is too low — lightly blurred faces can sometimes be de-blurred using AI enhancement tools. Always use high-strength blur or mosaic for sensitive content.
• Forgetting to blur reflections — a person's face reflected in a window, mirror, or shiny surface is just as identifying as a direct face view.
• Missing partial identifiers — part of a visible license plate, a tattoo, or a recognizable background landmark can still reveal identity even when the face is blurred.
• Relying on screenshot cropping instead of censoring — cropped images can sometimes be viewed with their full uncropped dimensions in certain contexts.

Frequently Asked Questions